Prevention and control method for greenhouse tomato gray mold

Abstract

The invention discloses a prevention and control method for greenhouse tomato gray mold. The method comprises the following steps: before tomatoes are planted, performing disinfection on a greenhouse,and performing ventilation on the greenhouse; sowing the tomatoes; reducing humidity in the greenhouse; maintaining ground temperature in the greenhouse; dipping flowers by using a medicine; pruningtomato plants; spraying a pesticide to the tomato plants; and after the tomato plants are diseased, performing chemical prevention and control by adopting a scientific and reasonable method. Accordingto the method disclosed by the invention, before the tomatoes are planted, fumigation disinfection is performed on the greenhouse to kill bacteria and pests in the greenhouse; an insect-proof net covers a ventilation opening of the greenhouse to prevent invasion of external pests to form damage and lead to infection of botrytis cinerea; a seedling bed is disinfected while the tomatoes are sown, so that infection of tomato seeds by the botrytis cinerea is effectively reduced; drip irrigation watering is adopted under a mulching film, so that water required by the tomato plants can be guaranteed, evaporation of surface water in the greenhouse can be effectively prevented, and the humidity in the greenhouse can be reduced; and diseased plants in a field are thoroughly removed in time, the diseased plants are brought out of the greenhouse for deep bury treatment, so that bacteria can be effectively isolated to prevent other tomato plants from being infected; and the above method disclosedby the invention effectively prevents an occurrence of the tomato gray mold.

Description

technical field [0001] The invention relates to the technical field of vegetable disease prevention and control, in particular to a method for preventing and controlling greenhouse tomato diseases. Background technique [0002] Botrytis cinerea is a serious and common disease on tomatoes. In addition to tomato, it can also harm more than 20 crops such as eggplant, pepper, cucumber, and gourd. In severe cases, it will cause extinction. Stems, leaves, flowers, and fruits can all be harmed, but the fruit is mainly harmed, and the disease is usually heavier in green fruits. At present, in the prevention and control of tomato gray mold in my country, the physical control measures include removing petals and high-temperature stewing sheds, and the chemical control is mainly through spraying saccharin, chlorhydrin, pyrimethanil, and Shijiale, etc. Botrytis gray mold resistance Strong, each medication must be used alternately, once every 5 days, continuous spraying 2-3 times, the do...

AI Technical Summary

Problems solved by technology

At present, in the prevention and control of tomato gray mold in my country, the physical control measures include removing petals and high-temperature stewing sheds, and the chemical control is mainly through spraying saccharin, chlorhydrin, pyrimethanil, and Shijiale, etc. Botrytis cinerea resistance Strong, each medication must be used alternately, once every 5 days, continuous spraying 2-3 times, the dosage and labor intensity are very high