p****y
发帖数: 23737 | 1 【 以下文字转载自 Vegetarianism 俱乐部 】
发信人: purity (purity), 信区: Vegetarianism
标 题: 转基因农田超级野草崛起，美国农民焦头烂额
发信站: BBS 未名空间站 (Mon Oct 4 10:07:30 2010, 美东)
转基因农田超级野草崛起，美国农民焦头烂额
森·哈姆林是一名拥有相关证书的作物顾问和农学家，他正在田纳西的戴尔斯堡寻找对
草甘膦产生抗性的杂草。艾迪·安德森正往他的地里追加喷洒灭草剂，以对抗那些对草
甘膦产生抗性的杂草。安德森先生有着大约3，000公顷大豆田，他正在对付那些有害的
长芒苋。
在至少22个州立十种产生抗性的杂草感染了上百万公顷的土地。艾迪·安德森是田纳西
州戴尔斯堡的一名农民。15年来他一直是免耕农业坚定的拥护者。免耕农业是一种环境
友好技术，几乎排除了耕作导致的水土流失以及肥料和杀虫剂造成的有害残留。
但今年情况不一样了。“农达”（Roundup）是孟山都公司原创的拳头产品，但现在也
有其他公司用它的属名“草甘膦”来进行销售，这东西对于农民来说，曾一度几乎算得
上是种奇迹化学品。它有着广谱的... 阅读全帖 |
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g***j
发帖数: 40861 | 2 from wiki
Soybeans, Resistant to glyphosate or glufosinate herbicides,
Herbicide resistant gene taken from bacteria inserted into soybean.
Percent Modified in US: 93%. Percent Modified in world:77% |
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i**b
发帖数: 918 | 3 “直言了”童鞋的这篇看似证据充分的论证，却存在很多问题。
“直言了”童鞋仅从专利文件中的几句话，断章取义，认定此玉米品种为转基因玉米，
未免过于草率。
“直言了”童鞋是查阅了很多资料，提供了很多信息，最后的结论是：先玉335的父本
PH4CV属于转基因（或含有转基因成分）玉米品种。
但是，27页的专利文件中（Patent 6897363）并没有提到该玉米品种（PH4CV）是转基
因玉米品种，而是说这是一个自交的玉米品系（Abstract下第一句话“An inbred
maize line”）。
文中提到“申述辞（摘录）Claims”，“直言了”童鞋显然没有理解“Claims”的意思
，这里应该理解为“权利要求”，而不是“申述辞”。在专利文件中，发明者在介绍发
明背景及发明内容之后，需要陈述专利所要保护的发明者的权利。Claims指的是发明者
要求的权利，而不是对发明的陈述。
这样我们再来看“直言了”童鞋从专利文件中摘录出的几段话。这几段话的主要意思是
，专利发明者要求保留使用该品种（PH4CV）用于研发抗虫和抗除草剂的转基因种子或
植物的权利。也就是说，该品种（PH4CV）可能，仅仅是... 阅读全帖 |
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d********a
发帖数: 3698 | 4
美国现在还没有转基因的小麦和水稻
转基因这种东西在科研上是必须要搞的，但远不到大规模普及的程度。中国来个大跃进
搞到水稻和小麦上让人吃有些急了。
以现在中国社会一切向钱看的风气，大规模搞转基因主食潜在的危险可能远远超过眼前
利益，况且还又是一小部分人的利益。
================================
人体内检测出多种转基因毒素，转基因核心谎言被戳穿
翻译评论：加拿大一个彻底戳穿转基因谎言的划时代重要研究
作者/译者：半解一知半解
评论：鉴于长期以来， 国内外转基因的讨论与推广已严重偏离科学的轨道，成了一个
利益和政治问题，所以， 有必要矫枉过正把这个问题还原回科学的轨道。
不可否认， 转基因技术本身是一种科学， 但同样不可否认，不是所有的科学技术都是
完美无缺、有益无害的，转基因是一种未经严格验证、其安全性还存在很多未知和不确
定性的技术，是一种存在巨大争议和巨大风险的技术，因为这项技术涉及到食品及食品
安全，所以，在实验室进行研究、完善无可质疑，但如果大面积推广，就应该受到质疑
乃至反对。这应该是目前大多数反转基因民众和仁人志士的基本共识。
而国内外转基因势... 阅读全帖 |
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t****z
发帖数: 8931 | 5 The Nation: Florida's Infamous Other Fruit
by Jon Wiener
Enlarge
Wim Lanclus/iStockphoto.com
South Florida grows most of the tomatoes used in food service and sold in
grocery stores.
Wim Lanclus/iStockphoto.com South Florida grows most of the tomatoes used in
food service and sold in grocery stores.
text size A A A July 27, 2011 Jon Wiener is a contributing editor for The
Nation.
The tomato is in trouble. The tomatoes in Big Macs and Taco Bell tacos and
in supermarkets, especially in the winter,... 阅读全帖 |
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k*******2
发帖数: 1429 | 6 BT proteins are toxic to human cells
Cytotoxicity on human cells of Cry1Ab and Cry1Ac Bt insecticidal toxins
alone or with a glyphosate-based herbicide
Mesnage R., Clair E., Gress S., Then C., Székács A., Séralini G.-E
Article first published online: 15 FEB 2012, Journal of Applied Toxicology
DOI: 10.1002/jat.2712
ABSTRACT
The study of combined effects of pesticides represents a challenge for
toxicology. In the case of the new growing generation of genetically
modified (GM) plants with stacked t... 阅读全帖 |
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C****g
发帖数: 2220 | 7 In conclusion, it was previously known that glyphosate consumption in water
above authorized limits may provoke hepatic and kidney failures (EPA). The
results of the study presented here clearly demonstrate that lower levels of
complete agricultural glyphosate herbicide formulations, at concentrations
well below officially set safety limits, induce severe hormone-dependent
mammary, hepatic and kidney disturbances. Similarly, disruption of
biosynthetic pathways that may result from overexpression... 阅读全帖 |
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I********l
发帖数: 8702 | 8 在你转贴的文章里，方舟子声称“美国已批准6个转基因水稻的商业化种植“。
事实是，美国从未批准转基因水稻的商业化种植。
In 2000, the first two GM rice varieties both with herbicide-resistance,
called LLRice60 and LLRice62, were approved in the United States. Later,
these and other types of herbicide-resistant GM rice were approved in Canada
, Australia, Mexico, and Colombia. However, none of these approvals resulted
in commercialization.
http://en.wikipedia.org/wiki/Genetically_modified_rice#cite_not
其次，美国从来不是水稻的主要生产国，在全球连前10名都排不进；更不是大米的主要
消费国，本国产量的54.5%用... 阅读全帖 |
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x********u
发帖数: 430 | 9 Science 20 September 2013:
Vol. 341 no. 6152 p. 1329
DOI: 10.1126/science.341.6152.1329
NEWS & ANALYSIS
AGRICULTURE
What Happens When Weed Killers Stop Killing?
Robert F. Service
Farmers in the United States are heading for a crisis. In parts of the
country, weeds resistant to the world's most popular herbicide, glyphosate,
now grow in the vast majority of soybean, cotton, and corn fields. Weeds
that can shrug off multiple other herbicides are also on the rise. At an
American Chemical Society sy... 阅读全帖 |
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y***l
发帖数: 1371 | 10 蒙三读发明的 Herbicide resistant corns 到反转民科那里，直接变成了 Herbicide
producing corns, 反转基因可以直接杀死杂草了。
发信人: CBI (史迪威), 信区: Military
标 题: 你不知道的转基因，老布什在孟山都看的，听的和说的
发信站: BBS 未名空间站 (Wed Sep 18 15:02:06 2013, 美东)
孟山都的技术人员说，我们现在做的这个是要通过转基因除草。 如果让我解释也就是
把一种能杀植物的农药里面的生物基因转移到某种植物种子里面，当该种植物被种植后
其它植物靠近它就会被杀死。但人和其它动物吃了它会不会死就不知道了。 |
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x******g
发帖数: 33885 | 11 老千们来说说这petition的论点论据有科学道理吗？
I'm Peter Stocker of Friends of the Earth, and I started a petition to the U
.S. Department of Agriculture, which says:
As someone who cares about the health of our families, our food system, and
our environment, I was very disappointed by your recent approval of Monsanto
's dicamba-resistant cotton and soybeans.
Dicamba has been linked to a range of adverse human health impacts, such as
reproductive and developmental harm. Workers, farming communities, and
children a... 阅读全帖 |
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s******n
发帖数: 518 | 12 Chances are, there's soybean in your diet. You eat it directly, down soy
milk with your coffee, or more likely eat meat that fed on crushed pieces of
soy.
By far the dominant maker of soybean seeds is Monsanto. This morning the
company won a unanimous case before the Supreme Court that threatened to
undercut its market share. In other words, Goliath beat David.
Like Intel's dominance in the chip market, almost every soybean in America
has Monsanto inside. Monsanto makes some 90 percent of soybea... 阅读全帖 |
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s******n
发帖数: 518 | 13 【 以下文字转载自 History 讨论区 】
发信人: shaodian (有熊), 信区: History
标 题: ZZ 转基因玉米致癌非谣言 团队获"真相揭秘者"奖
发信站: BBS 未名空间站 (Thu Feb 15 20:44:19 2018, 美东)
发布日期：2015-10-20 来源：转基因观察 浏览次数：1650
试验团队获得国际“真相揭秘者”奖
文| 转基因观察
还记得那个著名的转基因试验吗？试验小白鼠身上长满了肿瘤。央视曾经报道过
，无数人看过视频，但转基因方多次宣称这是谣言。农业部也多次组织专家否认这个试
验的真实性。事实真相究竟如何？最新情况如何？让我们还是先回顾下这个试验的漫长
争议过程吧。
2012年9月，法国凯恩大学塞拉利尼教授在《食品与化学毒物学》科学杂志上发
表一篇论文《农达（草甘膦）除草剂和抗农达（草甘膦）转基因玉米的长期毒性》，报
告引用转基因玉米NK603进行大鼠两年饲喂研究，引起大鼠产生肿瘤。
报道经央视新闻栏目报道后引起巨大的关注，支持方和反对方形成两大阵营，其
中转基因专家、方舟子、果壳网第一时... 阅读全帖 |
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l****z
发帖数: 29846 | 14 U.S. Rice Farmers Cash In On Venezuelan Socialism
U.S. Exporters Benefit as Production Falls in Latin American Country.
By SARA SCHAEFER MUÑOZ
U.S. rice farmers are making large profits from exports to Venezuela, thanks
to the impact of the late President Hugo Chavez's socialist policies. WSJ's
Sara Schaefer Munoz reports.
.
STUTTGART, Ark.—Steve Orlicek, a rice farmer here, is living the American
dream. He owns a thriving business; he vacations in the Bahamas.
His good fortune springs from... 阅读全帖 |
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a****t
发帖数: 66 | 15 In Canada at present, we have three main groups of herbicide-resistant
canola: Roundup Ready and Liberty Link varieties that were produced using
genetic modification, and Clearfield varieties that were developed using a
traditional plant breeding technique called mutagenesis.
GM or transgenic canola burst on the scene in 1995 and the acreage rose
rapidly. In 2004, transgenic Roundup Ready and Liberty Link varieties were
grown on 75 per cent of the acres, while Clearfield varieties were on 18 per... 阅读全帖 |
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n*******t
发帖数: 199 | 16 Preemergent Herbicides for Killing Crabgrass: When to Apply
To get rid of crabgrass (see pictures at right), it helps to know its life
cycle. When spring soil temps (at a depth of 2"-3") reach 55-60 degrees
Fahrenheit, the first crabgrass (also spelled "crab grass") seed will
germinate. From mid-summer to fall, crabgrass produces seed. The crabgrass
plants (but not the seeds) are killed by frosts in autumn.
Preemergent herbicides (also spelled "pre-emergent") come in either granular
or liquid fo |
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g*****9
发帖数: 4125 | 17 Crabgrasses can be controlled with pre-emergent herbicides that interfere
with a key enzyme when a seed germinates. These herbicides must be applied
at a critical time. If they are applied to the soil too early, they get
washed too deep into the soil by rainwater. If they are applied too late the
key enzyme inhibited is no longer active. The rule of thumb is to apply
when the local forsythia (连翘)blooms are wilting.
行了 |
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g*****9
发帖数: 4125 | 18 I have posted how to deal with crab grass in a few previous posts in great
detail, I will not repeat everything here, you can read it.
Here is the most important step, crabgrasses can be controlled with pre-
emergent herbicides that interfere with a key enzyme when a seed germinates.
These herbicides must be applied at a critical time. If they are applied to
the soil too early, they get washed too deep into the soil by rainwater. If
they are applied too late the key enzyme inhibited is no longer |
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f*1
发帖数: 837 | 19 Should be 'weed and feed', not 'weed and seed'.
'lawn food': fertilizer
'feed': fertilizer
'weed': herbicide
Herbicide: If its function is to kill weeds before they emerge from the soil
, it is called pre-emergent. If its function is to kill weeds after they
have emerged from soil, it is called post-emergent.
Note most pre-emergent also prevents good grass to emerge from the soil, so
you shouldn't use it when you are planting new grass or overseed.
I wrote here why 'weed and feed' with post-eme... 阅读全帖 |
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f*1
发帖数: 837 | 20 Yes, there are the Take-All Root Rot and the Pythium Root Rot, both can
happen to warm season grass like centipedegrass.
One thing you can try is to ask your nearest Cooperative Extension Service
Office to identify the disease. You can start from here:
http://www.csrees.usda.gov/Extension/
I suggest you search for "centipede maintenance" and read articles from the
.edu domain. This way, you'll have a very good idea about what you should
and shouldn't do to centigedegrass, which is kind of diff... 阅读全帖 |
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l******o
发帖数: 8344 | 21 拜托，除草剂跟转基因有个毛关系：
Glyphosate (N-(phosphonomethyl)glycine) is a broad-spectrum systemic
herbicide used to kill weeds, especially annual broadleaf weeds and grasses
known to compete with commercial crops grown around the globe. It was
discovered to be a herbicide by Monsanto chemist John E. Franz in 1970
看一下，除草剂是1970年出来的，转基因第一个作物是1995年 |
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h***a
发帖数: 312 | 22 10 most common GMO foods
1. Soy
Up to 90% of soybeans in the market have been genetically modified to be
resistant to an herbicide called, RoundUp. This increased resistance to the
herbicide allows farmers to use more RoundUp to kill weeds. However, this
results not only in a genetically modified food product, but also a food
product loaded with more chemicals.
2. Corn
Half of the US farms growing corn to sell to the conglomerate, Monsanto, are
growing GMO corn. Most of this corn is going to be ... 阅读全帖 |
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j***b
发帖数: 5901 | 23 The resistance to herbicide is the result of GM crop or herbicide usage?
The article is confusing. |
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m***8
发帖数: 7797 | 24 【 以下文字转载自 SanDiego 讨论区 】
发信人: spectrum805 (spectrum805), 信区: SanDiego
标 题: 土豆有那么可怕？
发信站: BBS 未名空间站 (Sun Dec 1 13:12:14 2013, 美东)
土豆是孩子最爱吃的食物之一。看完这篇文章后，小伙伴们都惊呆了。。。
http://www.hometalk.com/browser?link=%20%20http://sensiblegarde
“What most of us don’t realize is that potatoes are one of the most “
treated” crops out there. It all begins in early spring with a soil
fumigant, which kills nematodes and disease in the soil. Fields are doused
with a chemical toxic enough to kill all traces of microbi... 阅读全帖 |
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n*********g
发帖数: 219 | 25 那昨天应该施肥+preemergence herbicide。主要是防止夏季杂草发芽。Lowes卖的
Scotts Turf Builder with Halt就可以。
说是昨天因为昨晚下雨了。施的肥需要过水药效才能释放。你现在才施的话，自己用水
喷一下也行。这几天会很暖和。要撒herbicide尽早。不然种子发芽了就没用了。另外
冬季草也应该这个时候施肥。
然后就是把现有的杂草杀一杀。比如Ortho Weed B Gon，照头喷就好了。 |
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s*********5
发帖数: 5637 | 26 土豆是孩子最爱吃的食物之一。看完这篇文章后，小伙伴们都惊呆了。。。
http://www.hometalk.com/browser?link=%20%20http://sensiblegarde
“What most of us don’t realize is that potatoes are one of the most “
treated” crops out there. It all begins in early spring with a soil
fumigant, which kills nematodes and disease in the soil. Fields are doused
with a chemical toxic enough to kill all traces of microbial life. Next
comes a herbicide to “clean” the fields of all weeds. At planting time a
systemic insecticide is applied to the soil... 阅读全帖 |
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C******y
发帖数: 2007 | 27 听说golf用的herbicide对小孩很不好，不知道米国这边对golf场用的herbicide有什么
规定没？ |
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T*******m
发帖数: 27308 | 28 It is clover, a common garden weed. Use Weed-B-Gone or a similar herbicide
to kill it. It is very important to read the label before you apply the
herbicide. It must be the kind that "kill weeds, not grass". |
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T*******m
发帖数: 27308 | 29 这不是风吹来的。有可能是鸟和其他小动物喜欢在那里方便，种子就被她们带过来了。
应该可以用除草剂，你的这些“杂草”明显是双子叶植物。Selective herbicides的工
作原理是只杀双子叶植物，不杀单子叶植物（如草）。但要注意，只能用那些“kill
weeds,not grass" 的herbicides,不能用 Round-up。 |
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T*******m
发帖数: 27308 | 30 当今中国有句顺口溜，叫做：穷的时候种稻，富的时候种草。我虽然不富，但也种了几
年的草。我对种草其实懂得不多，虽自学不辍，但终未成才。不过到底种了几年的草，
心得和体会总是有的。现在把我的心得体会写出来，希望对房前屋后有块小草坪的朋友
们，不管是穷还是富，都有些帮助。
草地上的草，都属于禾本科（Grass Family），与竹子、水稻、小麦、甘蔗和狗尾巴花
是同一个科的植物。从个体的数量和分布的范围来讲，禾本科植物应该是植物界最大的
科了。草本的禾本科植物通常有两种生长的形态，一种叫蓬草(bunch grass)，一种叫
坪草(sod grass)。用来做草坪的草，当然都是坪草 。坪草的物种和品种很多，不同地
区不同气候条件种的草不一样，但也有一些共性。一般来说，当地商店里买的草籽（
grass seeds）和草皮（sod），都是比较适合当地的自然条件的。
一．维护和保养草坪必做的四件事情
1．割草。定期割草，不仅能使草坪美观，而且也可防止或减缓坪草从营养生长到生殖
生长的过渡。营养生长就是长叶子，生殖生长就是开花结籽。很多人都知道，春天的时
候有一段时间不割草，草就开花结籽了。大家也见... 阅读全帖 |
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T*******m
发帖数: 27308 | 31 当今中国有句顺口溜，叫做：穷的时候种稻，富的时候种草。我虽然不富，但也种了几
年的草。我对种草其实懂得不多，虽自学不辍，但终未成才。不过到底种了几年的草，
心得和体会总是有的。现在把我的心得体会写出来，希望对房前屋后有块小草坪的朋友
们，不管是穷还是富，都有些帮助。
草地上的草，都属于禾本科（Grass Family），与竹子、水稻、小麦、甘蔗和狗尾巴花
是同一个科的植物。从个体的数量和分布的范围来讲，禾本科植物应该是植物界最大的
科了。草本的禾本科植物通常有两种生长的形态，一种叫蓬草(bunch grass)，一种叫
坪草(sod grass)。用来做草坪的草，当然都是坪草 。坪草的物种和品种很多，不同地
区不同气候条件种的草不一样，但也有一些共性。一般来说，当地商店里买的草籽（
grass seeds）和草皮（sod），都是比较适合当地的自然条件的。
一．维护和保养草坪必做的四件事情
1．割草。定期割草，不仅能使草坪美观，而且也可防止或减缓坪草从营养生长到生殖
生长的过渡。营养生长就是长叶子，生殖生长就是开花结籽。很多人都知道，春天的时
候有一段时间不割草，草就开花结籽了。大家也见... 阅读全帖 |
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n***a
发帖数: 1742 | 32 网上找来的
Bittercress can be controlled with a liquid spray post-emergent herbicide
from companies like Spectracide, Ortho, or Bayer. However, if bittercress
has already gone to seed in your lawn you should plan to put down a pre-
emergent in the fall and spring, keep your lawn cut so that new seeds pods
cannot develop, and use a post-emergent herbicide early next season. |
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r******s
发帖数: 602 | 33 it looks like 2,4 D herbicide injure. any of your neighbor sprayed recently?
2,4D is in several ready to use herbicide spray you can buy in walmart or
homedepot. it could be other reason too. |
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c******n
发帖数: 4965 | 34 since this weed is broadleaf, there are many herbicide that work only on
broadleaf, it's very easy to find one. you can just browse through the
herbicide section of homedepot |
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f*1
发帖数: 837 | 35 When pulling, make sure you get the bulbs/bulblets/bulbils, which is the
primary reason it is hard to eradicate this kind of oxalis.
For chemical control, one can try herbicides with glyphosate (e.g. Roundup)
or at least 8% triclopyr (e.g. Ortho CCO) as the ingredient. Make sure you
read the labels carefully as glyphosate is non-selective (i.e. kill all) and
triclopyr is selective (i.e. kill some including some warm season grasses).
The key is multiple applications because the bulbs may not b... 阅读全帖 |
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T*******m
发帖数: 27308 | 36 wood sorrel。
对已经长出的杂草，用selective herbicide。
在发芽之前，用pre-emergent herbicide，阻止种子发芽。 |
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r********n
发帖数: 399 | 37 请草神们看看，杂草密度的密度还在不在可控程度。
第二张照片上的是不是就是螃蟹草？如果是的话，现在能不能用pre-emergent
herbicide？我们的好草是百慕大草，是不是不受pre-emergent herbicide的影响？
还有在墙角草比较高的地方，有些地方草成片的枯死了，像是什么小动物经过的痕迹。
而其枯草里还有这种黑色的小虫。那是什么虫子，用什么药能杀。
指点一下吧，这个草地的学问还挺大。谢谢。 |
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f*1
发帖数: 837 | 38 Read this first and follow the Bermuda Bible to the letter:
http://www.mitbbs.com/article_t/Living/33122975.html
That's definitely not crabgrass. Check if it is nutsedge or not.
Pre-emergent herbicides only control seed germination, and some may control
young grass/weeds. For established grass, there is not need to worry about
pre-emergent herbicides. However, always read the labels carefully before
applications though.
Don't know what the bugs are as I don't see legs. Check if they are
bill... 阅读全帖 |
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f*1
发帖数: 837 | 39 First, congratulate yourself that you have Bermuda as the good grass, not as
a weed.
Second, I suggest you practice whatever is described here:
http://aroundtheyard.com/the-news/71-bermuda-bible.html
Finally, killing Coarse Tall Fescue isn't easy, since it is a grass, not a
broadleaf.
1. Hand pulling, if it is feasible.
2. Touch paint with glyphosate (i.e. Roundup), if you have the patience. A
variation is to wrap a mop cloth around a stick or the end of a rake, spray
ample glyphosate on the cl... 阅读全帖 |
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f*1
发帖数: 837 | 40 Grassy weeds like crabgrass and poa annua are harder to control post-
emergently because they are also grasses. Broadleaf weeds like chickweed
and oxalis are easier to control post-emergently because they are not
grasses. All the above four can be effectively controlled by most pre-
emergent herbicides (i.e. crabgrass preventers).
Coalpilerd already identified chickweed in your first picture, although I
saw more poa annua there than chickweed so I reminded you the grassy ones as
well. Your se... 阅读全帖 |
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x**8
发帖数: 4844 | 42 液体的那个是这个：
Dimension 2EW Herbicide
$136.9, 1/2 Gallon jug (64 oz, 4 pints)
http://www.domyownpestcontrol.com/dimension-2ew-herbicide-p-1494.html
这个俺去年用过，效果很好，不怕大雨。不过这个量很大，家里草坪小的话要用很多年
，所以要保管好，不要冻，不要晒。另外还有几个说明：
- 使用时有三档用药量：
* 低药量：0.28oz/1000 sq ft，可用于草坪剪得比较高的，有效期3-5个月；
* 中等药量：0.37oz/1000 sq ft，可用于草坪剪得比较低，有效期4-6个月；
俺一般用中等药量。
* 大药量：0.55oz/1000 sq ft, 草坪剪得低并且头一年没做过杂草控制，有很多杂
草，有效期4-6个月。
- 喷洒完后（地大的用spraying tank,小的用backpack sprayer)，需要1/2“以上的雨
或浇水来激活才起作用。
- 药如果保管的好，一般的shelf life有3到5年。
- 纽约州的好... 阅读全帖 |
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x**8
发帖数: 4844 | 43 著名而简单易行的scotts家的steps 1、2、3、4四步草地管理法适合不介意大量使用化
肥而且状况已经完美的草地。如果你家草地已经恶化，比如已经出现草过稀、杂草过多
、害虫过多，那么这个四步法是不灵的。这个系列的目的是解析草地治理的各个环节，
帮助大家从根本上学会处理草地的各种问题。
上一次说了冷季草地浇水篇，链接于此：
【一年之计】冷季草地系列1： 浇水篇 - sprinkler
http://www.mitbbs.com/article_t/gardening/32236853.html
这一篇咱们说除草。这个俺以前也发过贴，这次补充了来自网络/网友的更多信息，供
大家参考。
这里的方法主要适合北方冷季草里常见的Kentucky Blue Grass和大多数fescues。fine
fescue比较细嫩，用药量要酌减。
一、常见杂草种类
杂草一般粗分为寬叶草和细叶草。寬叶草顾名思义就是叶子较宽的草，常见的包括
clover, 蒲公英等，款野草用常见的post-emergent herbicide药很容易除。
clover(四叶草）
蒲公英
细叶杂草的典型代表是crabgras... 阅读全帖 |
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f******s
发帖数: 178 | 45 5K 的地， 可以设计一下landscaping. 考虑是否可以/需要种evergreen tree/ bush，
遮挡privacy。e.g Holly or Thuja. 那个窗子需要遮挡， 那里的视线/噪音， 需要阻
断。 阴影想那里投射。几乎所有的草皮在阴影里都长不好。以及水电气，各种管线埋
的位置。
把地弄平。 同时用细耙子，把表面刮一遍， 大的石头刮到树下/屋檐下/path，做
gravel mulching(下面放landscaping fiber, 周围edging)。
上面铺 2-4 IN top soil。土便宜， 运费贵。
根据 邻居/当地的经验选草的品种。 选邻居草皮里面最常见的品种。
根据草的品种， 选starting方法。 草籽儿/草皮/plugs. 头2月的水费会很贵的。
straw blanket是好主意。
早期会有很多野草的， 需要用很多herbicide。e.g tenacy, 2,4-D
如果草籽儿方法， 还不能用pre-emer. herbicide. e.g. prodiamine
土壤测量对你的意义不大， 买个PH仪就够了（Ebay $5）。... 阅读全帖 |
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W**H
发帖数: 716 | 46 http://www.wyzxsx.com/Article/view/201201/287601.html
蒋高明
为继续维护转基因商业利益，著名打假更造假打真斗士方舟子有下面的雷人语
：孟山都除草剂农达原粉毒性比食盐还低！
虹桥科教论坛 送交者: 明天会更好 于 2012-01-13 03:42:13
@旋风柴进 ： 公然撒谎证据： @方舟子 公开宣称：“孟山都除草剂“农达”....
..对人体健康没有任何危险。” ——如何解释农民喝农达自杀身亡？
@方舟子 :说一种农药低毒无害是指施用剂量而言的，而不是指当饮食往嘴里灌。
农达原粉的毒性比食盐还低，还有人喝它自杀，真是怪异。
@司马南:方舟子的回答，诸位有何补充。
@平方根的小窝: 我们做一个实验：俺喝一定量的食盐水，方舟子喝同样量同样浓
度的农达。
@金微：可以试验，有对照，有对比。
@金微：遇到这叉子真是没办法.说不清.不讨论了.让方舟子实验完再说吧。
如果方舟子作为娱乐人士，他的上述话不会有人当真，还以为是愚人节说的笑
话。... 阅读全帖 |
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G*********s
发帖数: 6786 | 47 t’s virtually impossible to provide a complete list of genetically modified
food (GM food) in the United States because there aren’t any laws for
genetically modified crops!
Some estimates say as many as 30,000 different products on grocery store
shelves are "modified." That's largely because many processed foods contain
soy. Half of North America's soy crop is genetically engineered!
Rapeseed - Resistance to certain pesticides and improved rapeseed cultivars
to be free of erucic acid and glucos... 阅读全帖 |
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n**e
发帖数: 2026 | 48 今年初，美国科学促进会（AAAS）和皮尤研究中心（Pew Research Center）联合公布
的一项调查显示，88％的科学家认为转基因食品可安全食用，持这一看法的公众只有37
％。报告认为差距如此之大的一个可能原因是，三分之二的公众认为科学家对转基因食
品的健康后果没有清晰认识。这就是真正的原因吗？
根据报告全文，皮尤中心给19，984名科学家发出了调查问卷，3748人（18.8%）完成了
问卷调查。其中生物医学学科背景的科学家占50%。报告没有说明50%的生物医学背景是
否能够代表科学家总体的学科构成。更大问题是在这50%的科学家人群中，有多少人的
工作是与转基因作物的研究有关，以什么样的方式相关。报告没有提供任何信息。
由于这些关键信息缺失，88%的科学家相信转基因安全的说法毫无意义。在一个没有代
表性并且无法排除偏向性的样本中调查，科学家相信转基因安全从1%到99%与88%没有任
何不同。好消息是超过半数的美国民众认为转基因不安全。
2012年10月，美国科学发展协会以官方名义（Board of Directors ）抛出了一个反对
转基因标识声明（附录1）。目的就是诱导民... 阅读全帖 |
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M*********m
发帖数: 2024 | 49 Seems like some sort of code to me. Herb might be herbicide, so literally,
this person sells herbicide to stem the growth of wild grass.
But if you put in a spy novel, it might be
Woodman(s),
Very last call
Time is ready,
Date: 30-31, April,
Midnight |
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p****y
发帖数: 23737 | 50 【 以下文字转载自 Vegetarianism 俱乐部 】
发信人: purity (purity), 信区: Vegetarianism
标 题: 转基因农田超级野草崛起，美国农民焦头烂额
发信站: BBS 未名空间站 (Mon Oct 4 10:07:30 2010, 美东)
转基因农田超级野草崛起，美国农民焦头烂额
森·哈姆林是一名拥有相关证书的作物顾问和农学家，他正在田纳西的戴尔斯堡寻找对
草甘膦产生抗性的杂草。艾迪·安德森正往他的地里追加喷洒灭草剂，以对抗那些对草
甘膦产生抗性的杂草。安德森先生有着大约3，000公顷大豆田，他正在对付那些有害的
长芒苋。
在至少22个州立十种产生抗性的杂草感染了上百万公顷的土地。艾迪·安德森是田纳西
州戴尔斯堡的一名农民。15年来他一直是免耕农业坚定的拥护者。免耕农业是一种环境
友好技术，几乎排除了耕作导致的水土流失以及肥料和杀虫剂造成的有害残留。
但今年情况不一样了。“农达”（Roundup）是孟山都公司原创的拳头产品，但现在也
有其他公司用它的属名“草甘膦”来进行销售，这东西对于农民来说，曾一度几乎算得
上是种奇迹化学品。它有着广谱的... 阅读全帖 |
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