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Mung bean is a common vegetable on our table. They are delicious and nutritious in iron pots and griddles, so they are loved by many people. Nowadays, green beans are planted all over China to meet everyone's daily needs. Although the output on the market is already high, it is still very popular. Even if the price is a little high, there are many buyers. Even so, not every grower can get high profits, mainly because these growers have many problems in planting.

It is necessary to remove the flowers and pods falling in the field in time, remove the damaged leaves and pods, bury them deeply or burn them, and eliminate the larvae in the flower buds in time to prevent the pests from being further transferred from Jiamusi insect source. Water more in winter and spring to improve soil moisture, so that the cocoon-forming larvae in the soil will die, while the overwintering larvae in the soil in winter will be exposed, frozen to death or pecked by birds, reducing the source of overwintering insects.

One of the most common diseases in the growth of green beans is stem borer, also known as cowpea stem borer. This kind of bug reproduces quickly, so it is difficult to kill. Let's talk about how to control moths.

In order to prevent moths, the usual management work must be done well, and every detail can't be sloppy. In the process of planting, all fallen flowers and pods in the field should be removed in time, and at the same time, fallen leaves and pods should be buried in the soil or directly poured, so that no traces will be left and pests will not be transmitted to healthy plants. In addition, it is necessary to eliminate the larvae in the flower buds in time and completely kill the insect source so that it has no chance to harm the green beans again.

Spraying chemicals to kill the larvae in the flower buds at flowering stage is best done at 8- 10 on sunny days, which is the opening period of the flower buds, which is conducive to killing the larvae in time when the liquid medicine enters the flower buds. In addition, after flowering, when the pod grows to more than 10 cm, it can be sprayed 1-2 times, which can kill the newly hatched larvae and the larvae that have drilled into the young pod. The selected chemicals should be harmless to the flowers and young pods of green beans and have good permeability. You can choose pyrethroid insecticides, quick-killing, synergistic cypermethrin emulsifiable concentrate, Kung Fu and other chemicals. Pay attention to the alternate use of drugs to avoid drug resistance, and spray once a week, 2-3 times each time. It is also possible to mix dichlorvos with soil to make toxic soil and spread it evenly on the ground for poisoning.