The main pest control in the field of greenhouse

The main diseases occurring in the greenhouses are gray mold and anthrax. The main pests are underground insects such as aphids, whitefly and ground tiger.

Botrytis cinerea mainly occurs under conditions of low temperature, high humidity and low light, and is generally prevented by ecological measures such as ventilation and temperature reduction. Once a disease occurs, 5% narcotics suspension 1000 times solution or 50% Tectron suspension 800 times solution is used. Shi.

The initial stage of anthrax is light gray, and later developed into a dark brownish edge, with a central gray round spot, which easily leads to shrinkage and shedding of diseased leaves. Control methods: 70% thiophanate-methyl wettable powder 500 times spray.

The aphids and whitefly were prevented by physical means such as insect nets or yellow plates, and 10% imidacloprid wettable powder 1000 times or 2.5% kungfu water spray 1000 times was used as a spray.

Ground pests such as ground tigers are sprayed with 2.5% deltamethrin EC or 20% fenvalerate EC 200 to 300 times during the control period.

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