菜园里的小害虫。。。。。。

绿袖子

这里人气旺，就把帖子发这里，对种菜的朋友们有帮助。

现在菜地里的小菜已经出苗了，但是菜叶子上可能会有小洞洞，是什么东东咬的呢？排除菜青虫，还有一种北美常见的一种小害虫 flea beetle 最爱吃菜叶子了。 用什么方法杀死它呢？请看：

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www.youtube.com/watch?v=Ha87WUpUzQc
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Here are tips on how to identify, eliminate, and control flea beetles.
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What are Flea Beetles?
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There are many species of flea beetles which attack numerous plants, but vegetable crops are most susceptible to these pests. Flea beetles are so named because of their ability to jump like fleas when bothered. The beetles are small and shiny, with large rear legs. Eggs are laid at the base of plant stems in early summer after a feeding period, and larvae feed at the roots. Adult beetles, about 1/16 inch long, feed on foliage, producing “shotholes” in the leaves.

How to Identify Flea Beetles

Flea beetles vary from black to tan, solid or spotted depending on the species. Adult flea beetles over winter in brush and wooded areas. They pose a threat early in planting season as they are emerging, typically when weather reaches 50 degrees. Look for shotholes in leaves, especially on young seedlings, where damage is most rapid and will cause the most harm. Flea beetles usually don’t cause fatal damage to established plants because the leaves are too large. The real danger is that they can spread bacterial diseases, such as wilt and blight, from plant to plant. Therefore, they must be controlled at once.
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0 z$ Z# R6 f: cHow to get rid of Flea Beetles
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In the spring, emerging flea beetles will be waiting to feast on your garden. Cut off their food supply by delaying transplanting or planting by a couple weeks if possible.
In the fall, till the garden to unearth any hiding flea beetles. This will also make soil easier to work the next spring.
Try this homemade spray to control flea beetles: 2 parts rubbing alcohol, 5 parts water, and 1 tablespoon liquid soap. Spray the mixture on the foliage of garden plants that are susceptible to these pests.
5 {; B, x' @4 rRow covers may be successful at keeping these pests out, as long as they are completely sealed. They should be used immediately after transplanting, so the pests do not have time to find the plant.
Insecticides may be used early in the season, but are generally unnecessary in the control of flea beetles on adult plants. Be extra diligent if your soil has history of bacterial diseases. Please contact your local nursery or cooperative extension for further advice.

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今天上午我和朋友 采用 ： 2 份酒精+5份水+1 份酵素兑的液体，喷到小虫身上 ，一会儿小虫就不动了。
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希望此贴对大家有帮助。
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如果你有更好的方法去除flea beetles，请不吝赐教。谢谢！
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绿袖子

www.youtube.com/watch?v=3a1VslbW074

妹妹

谢谢，我们家也是这种虫子吃光光我的菜苗