Prevention and control method for tomato chlorosis virus disease

Abstract

The invention discloses a prevention and control method for tomato chlorosis virus disease. Tomatoes are cultivated in a sunlight greenhouse according to sizes, the large row spacing is 80cm, and thesmall row spacing is 60cm; trapping plants are transplanted before field planting of the tomatoes in 15-20 days, a row of the trapping plants is planted in the middle of small rows of field planting rows, and the plant spacing is 25 cm; substrate discs containing carbonized rice husks are used for the trapping plants to culture seedlings, carbonized rice husks are applied to planting pits, and thiamethoxam solution is used for disc dipping and root irrigation; before the trapping plants are transplanted, a 40-mesh insecticidal protective net is used for closing vents of the sunlight greenhouse. The prevention and control method can effectively reduce the incidence of tomato chlorosis viruses on the premise of greatly reducing chemical pesticide dosage and achieving non-contact chemical control of main crops, and the incidence of the chlorosis viruses in susceptible tomato varieties can generally be controlled within 4%.

Description

technical field [0001] The invention relates to a method for preventing and controlling tomato diseases, in particular to a method for preventing and controlling tomato chlorosis virus disease which can reduce the use of chemical pesticides and realize non-contact chemical control of main crops. protect the technical field. Background technique [0002] Tomato chlorotic virus (ToCV) is a new disease that broke out in some provinces in my country in recent years. It broke out and became popular in Hebei, Tianjin, Shandong and other provinces, seriously affecting tomato production. [0003] At present, the production still mainly relies on the chemical control of the vector insect Bemisia tabaci to realize the prevention and control of chlorotic virus disease, which has caused the unreasonable use or even abuse of chemical insecticides, which in turn leads to pest resistance and insecticidal effects. Chemical pollution and residues, etc., seriously threaten major social and e...

AI Technical Summary

Problems solved by technology

[0003] At present, the production still mainly relies on the chemical control of the vector insect Bemisia tabaci to realize the prevention and control of chlorotic virus disease, which has caused the unreasonable use or even abuse of chemical insecticides, which in turn leads to pest resistance and insecticidal effects. Chemical pollution and residues, etc., seriously threaten the safety and ecological security of agricultural products, as well as major social and economic issues such as agricultural product export.

[0004] At the same time, it is difficult for ordinary insect nets with good ventilation effect to prevent Bemisia tabaci from entering and leaving the greenhouse.

The use of 60-mesh insect-proof net seriously affects the ventilation effect of the greenhouse. The ventilation speed is slow and the cooling speed of the greenhouse is slow, which affects the growth of tomatoes and aggravates the occurrence of viral diseases. Lice come in and out of the greenhouse, the effect of isolating bemisia tabaci cannot be achieved