How to prevent and control the greenhouse

February 18, 2020

Melon grasshoppers are mostly adult and nymphs clustered on the back of the leaves, sucking sap from the tender stems and shoots, causing the young leaves to curl up, the growing point to die, and the melon seedlings to wilt. In severe cases, the whole plant can be killed in the melon seedling stage, and it can cause leaf damage and dryness. More importantly, it can spread viral diseases and cause symptoms such as mosaic, malformation, and dwarfing. The plant damages prematurely and causes greater losses. For the above proposed prevention and control methods:

Agricultural control Clearing weeds in the field, thoroughly removing melons, diseased leaves of vegetables, etc., can also adopt high-temperature stuffy shed method, first use plastic film to close the greenhouse for 5 days, eliminate the insect source in the shed.

The physical control uses the winged toad to have a strong tendency towards yellow and orange yellow. Take a rectangular hard paper or dimension board. The size of the board is generally 3050 centimeters. Firstly coat one layer of yellow advertisement color. After drying, coat it again. Layer of viscous yellow motor oil (add a little butter) or No. 10 motor oil, set 2 to 3 pieces per acre, slightly higher than the melon species, when full of tapeworm, it is necessary to reapply sticky oil in time.

Chemicals prevention and control in the evening enclosure, with 65 grams of stubble powder per acre, hand-powder sprayer spray, dusting tube over the plant, swinging around the uniform, can not be aimed at spraying plants, do not need to enter the middle of the road Spraying, such as rainy days, can be sprayed at any time, sunny days will be carried out sooner or later, the last person to exit the door and close the door. Can play an effective control role.

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