j********p
发帖数: 217 | 1 在南加地区，每年冬季院子里面就长这样的杂草（图片），夏季就消失了。请问版上众
位，谁知道这是什么植物？如何除去？感谢感谢，顺便给大伙儿拜个年。 | F******x
发帖数: 3859 | | T*******4
发帖数: 13143 | | f*1
发帖数: 837 | 4 I think it is Bermuda Buttercup (one type of Oxalis):
http://en.wikipedia.org/wiki/Oxalis_pes-caprae
The 'Bermuda' name sends chills ..., so be prepared for a tough battle. | s*********8
发帖数: 1962 | | f*1
发帖数: 837 | 6 Yes, you can:
http://www.rootsimple.com/2013/01/wild-edible-bermuda-buttercup
But as with all types of Oxalis, don't eat a large amount at one time:
http://baike.baidu.com/link?url=zjpywAXbNWH6DQdtV0tuZ9-tWsGl_Y9
"酢浆草属的特征是含有草酸，其叶子及花朵有一些酸味，吃点可以提神。但是若大量
摄取，则会变得有毒，影响正常的消化。" | s*********8
发帖数: 1962 | 7 哦，那还系不吃了吧。谢谢科普
【在 f*1 的大作中提到】
: Yes, you can:
: http://www.rootsimple.com/2013/01/wild-edible-bermuda-buttercup
: But as with all types of Oxalis, don't eat a large amount at one time:
: http://baike.baidu.com/link?url=zjpywAXbNWH6DQdtV0tuZ9-tWsGl_Y9
: "酢浆草属的特征是含有草酸，其叶子及花朵有一些酸味，吃点可以提神。但是若大量
: 摄取，则会变得有毒，影响正常的消化。"
| f*1
发帖数: 837 | 8 http://en.wikipedia.org/wiki/Oxalis
A characteristic of members of this genus is that they contain oxalic acid (
whose name references the genus), giving the leaves and flowers a sour taste
which can make them refreshing to chew.[3] In very large amounts, oxalic
acid may be considered slightly toxic, interfering with proper digestion and
kidney function. It should be noted, however, that oxalic acid is also
present in more commonly consumed foods such as spinach, broccoli, brussel
sprouts, grapefruit, chives, and rhubarb, among many others.[4] General
scientific consensus seems to be that the risk of sheer toxicity, actual
poisoning from oxalic acid, in persons with normal kidney function is "
wildly unlikely".[5] While any oxalic acid-containing plant, such as Oxalis,
is toxic to humans in some dosage,[6] the U.S. National Institutes of
Health note that oxalic acid is present in many foodstuffs found in the
supermarket and its toxicity is generally of little or no consequence for
people who eat a variety of foods.[7] | d**********0
发帖数: 13081 | 9 俺这里， 已经是成片的了， 还未开花。 俺的对策是， 每天拔15分钟。 | h*******8
发帖数: 1217 | 10 good exercise
【在 d**********0 的大作中提到】
: 俺这里， 已经是成片的了， 还未开花。 俺的对策是， 每天拔15分钟。
| f*1
发帖数: 837 | 11 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 be killed with
one application, or even if they are killed, there may be detached bulbs
underground that may grow later on, so it might be a multi-year project.
Only apply those herbicides when you see leaf growth.
【在 d**********0 的大作中提到】
: 俺这里， 已经是成片的了， 还未开花。 俺的对策是， 每天拔15分钟。
| T*******m
发帖数: 27308 | 12 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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