Ecological control method for preventing sogatella furcifera with assistance of pesticide

Abstract

The invention discloses an ecological control method for preventing sogatella furcifera with assistance of pesticide. The ecological control method for preventing the sogatella furcifera with assistance of the pesticide comprises the following steps that in the earlier peak occurrence period of the sogatella furcifera, water in fields is discharged to expose a muddy surface or shallow-layer water; in the occurrence peak period of imagoes, the efficient and low-toxic pesticide is selected for killing pests in a spraying mode; water is injected five days later the water is discharged; the water is discharged again half a month later after deep irrigation; discharging and injection are circulated continuously (20 days is a cycle), and the second-time use of the pesticide is determined according to the pest conditions in the fields. The ecological control method for preventing the sogatella furcifera with assistance of the pesticide has scientific instruction significance of reducing the use of pesticide in the fields and improving the environment-friendly effective prevention of agricultural pests.

Description

technical field [0001] The invention relates to the field of prevention and control of major agricultural pests, in particular to an ecological control method for controlling white-backed planthopper pests of rice with auxiliary insecticides. Background technique [0002] White-backed planthopper ( Sogatella furcifera ), belonging to the order Homoptera and the family Delphacidae. It is widely distributed in South Asia, Southeast Asia, Pacific Islands, Japan, Korea and Australia, almost all the rice areas in my country. Adults and nymphs of white-backed planthopper cluster in the lower part of rice bushes, and suck the phloem juice of rice plants through their mouth needles to damage rice, and the older nymphs and adults eat a lot. Its feeding will lead to slow growth of rice, delayed tillering, and increased shriveled grains; when the damage is serious, the rice plants will die, showing a "lice burn" appearance. Due to the insect's small size, strong migratory fecundity,...

AI Technical Summary

Problems solved by technology

Many farmers lack awareness of the use of pesticides and their safety, and are blind to when to use pesticides, what to use, and how long the safety interval is, which further affects the safety of agricultural products

[0005] For the prevention and control of white-backed planthopper, in addition to chemical methods, some scholars have proposed methods such as co-cultivation of rice and ducks, release of parasitoids, etc., but all due to cost of control High, the effect is not good and has not been widely applied

Chen Demao (1991, scientific water control research on the population development of white-backed planthoppers in field, Guizhou Agricultural Sciences) proposed a relatively preliminary ecological control method, but it has its limitations. The specific time is not indicated, and the development period of eggs at different temperatures is different. It cannot be simply considered that the shallow water irrigation is 1-5 days after the white-backed planthoppers migrate into the main peak period; when the temperature is relatively low, it is not It must be shallow irrigation, which can be shallow irrigation or complete drainage, and the control effect of complete drainage is better; this study did not conduct precise experiments on irrigation depth in the laboratory, and field experiments have large errors; the results of this study can scientifically control white-backed fly Lice population, but if the prevention and control is not proper, it cannot be completely and effectively controlled. It must be combined with insecticides for comprehensive prevention and control, and timely use of pesticides. This is what the author did not mention

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