Method for preventing and treating plant diseases and insect pests of vegetables by reasonable intercropping

Abstract

The invention discloses a method for preventing and treating the plant diseases and the insect pests of vegetables by reasonable intercropping, which belongs to the field of the modern nuisance-free agricultural control of the plant diseases and the insect pests. In the invention, by the intercropping of corn and leaf vegetables, a planting mode of 3.5 feet with a field is adopted, the corn is planted in one row, the row distance is 1.5 feet, the leaf vegetables are planted in one row, the row distance is 1.5 feet, a row of corn is planted with the seedling density per mu of 2900 plants, then a row of leaf vegetables is planted, the corn and the leaf vegetables grow at intervals, the air temperature of the field is lowered by 0.8 DEG C in comparison with that of the single planting of the leaf vegetables or the corn by utilizing the growth habits of the corn and the leaf vegetables, and the ground temperature is lowered by 3 DEG C, so that the viral diseases of the leaf vegetables can be reduced by more than 30 percent, leukoderma is reduced by 25 percent, the soft rot of the leaf vegetables is reduced by 18 percent, downy mildew is reduced by 12 percent, the generation of other diseases and pests of various leaf vegetables is also lightened obviously, the preventing and treating effect which is better than that of pesticide application is achieved without applying pesticide, the pesticide pollution can be reduced, the agricultural insecticidal cost is lowered, the yield is enhanced, and the effects of greenness, safety and health are completely achieved.

Description

technical field [0001] The invention belongs to the field of agricultural pest control for vegetable planting, in particular to the field of modern pollution-free agricultural pest control. Background technique [0002] At present, the known methods of agricultural prevention and control of diseases and insect pests all achieve their goals through various pesticides. This not only increases the cost of pest control, but also causes environmental pollution, which affects people's demand for green and pollution-free vegetables. Especially when the area of ​​vegetable fields continues to expand and organic fertilizers are seriously insufficient, vegetable farmers use a large amount of chemical fertilizers and pesticides to prevent insects and obtain high yields. At present, underground pests are becoming more and more serious, and it is difficult to kill pesticides at ordinary concentrations. It is necessary to increase the concentration and shorten the time between spraying t...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the current agricultural use of pesticides to prevent and control pests, causing environmental pollution and excessive pesticide residues in vegetables, the present invention discloses a method for intercropping and preventing and controlling vegetable pests and diseases. This method can not only effectively prevent and control pests and diseases, but also reduce pesticide pollution and agricultural The cost of insecticide is a good method of agricultural insect control