后院种菜有蚜虫怎么办?

Cockatiel

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今年种了点鸡毛菜,大概是类似小白菜一样的叶子菜,刚发出了小苗,叶子上就有很多非常小的小洞,疑似是蚜虫类的东西咬的,有什么办法去虫?:)
 
For some reason, if the seeds are from China, it is very likely to happen like this. The seeds I got here, usually are ok.
 
今年种了点鸡毛菜,大概是类似小白菜一样的叶子菜,刚发出了小苗,叶子上就有很多非常小的小洞,疑似是蚜虫类的东西咬的,有什么办法去虫?:)

If there are holes on leaves, they are not aphis. It could be defoliators.
 
For some reason, if the seeds are from China, it is very likely to happen like this. The seeds I got here, usually are ok.

Don't understand this. If insects came with seeds, they should not feed on leaves. It doesn't look like the insect from seeds in this case.
 
It is only my experience. Every year I tried some seed from China or Chinatown. They were planted side by side with seed I got from Wal-Mart. They either grow every slow or don’t grow at all. Some did grow but insect like them. It looks like the seed I got wal-mart has some insect resistant in it. The plant from china may not resist the kinds of insects here or they are commercial variety which requires using pesticides. The weather here also different, day time is hot buy night is cold. The variety grows in southern China may not fit here. The growing season also short, something needs 5 months to grow wouldn’t work out here. I tried some “ Qin Chai”, same result as you, insect eat them. I hate to use pesticide on what I would eat, so have to abandon them. Next time I would try some seeds from Wal-mart. Wal-mart seeds may be tested growing here before are put on shelf. Only variety works are put on market.
 
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