Method for controlling tomato chlorotic viruses

Abstract

The invention discloses a method for controlling tomato chlorotic viruses. The method comprises the steps of: planting tomatoes in a sunlight greenhouse according to the size of rows, wherein the rowspacing of large rows is 80 cm, the row spacing of small row is 60 cm; transplanting trap plants 15-20 days before final planting of the tomatoes, and planting a row of the trap plants between every two small rows of final planting rows, wherein the plant spacing is 25 cm; raising seedlings of the trap plants in hole trays by adopting a carbonized rice husk-containing substrate, applying carbonized rice husks into final planting holes additionally, and adopting a thiamethoxam chemical solution to dip the hole trays and water roots; and sealing a vent of the sunlight greenhouse with a 40-mesh insecticidal protective net before the trap plants are transplanted. According to the method, the incidence of the tomato chlorotic viruses can be reduced effectively under the premise of reducing thedosage of chemical pesticide greatly and achieving non-contact chemical control of the main crop, and the incidence of tomatoes infected by the tomato chlorotic viruses can be controlled at 5% or below generally.

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