dudaan2020-07-24 21:16:11

种了十多棵,只结了五六条黄瓜,然后一棵棵叶子枯萎死亡。

搜索结果如下:(无药可治)

Bacterial Wilt

The main symptom of this disease is severe wilting of the vines, followed by rapid death of the plant. The disease is caused by the bacterium Erwinia tracheiphila, and at first may only affect a few vines on a plant. However, as the disease progresses, more leaves wilt, and eventually the entire vine is affected. Bacterial wilt is most severe on cucumber and cantaloupe and less severe on squash, pumpkin and watermelon.

Prevention & Treatment: There is no chemical control for bacterial wilt once plants become infected. The bacteria are carried from plant to plant by striped or spotted cucumber beetles. The beetles spread the wilt bacterium by feeding on infected vines and then feeding on healthy plants.

Bacterial wilt can be reduced in your garden if the beetles are kept under control at the first sign of activity. Insecticides that control striped and spotted cucumber beetles in the home vegetable garden include carbaryl, bifenthrin, cyhalothrin or cyfluthrin. Bees pollinate many of these vegetables, so spray all insecticides in the late afternoon. Apply all chemicals according to directions on the label.

八妹子2020-07-25 02:12:00
明年黄瓜苗载下后就开始用yellow sticky traps cucumber beetle
dudaan2020-07-25 15:11:37
多谢,不会把蜜蜂也粘住吗?
八妹子2020-07-25 18:24:07
从来没粘住过蜜蜂,黄峰倒是粘住过,估计蜜蜂采花粉是通过波段感应
dudaan2020-07-25 18:30:51
再谢!明年一定会用