Early prevention of maize rough dwarf

Maize rough dwarf disease is a viral disease transmitted by Laodelphax striatellus. In view of the characteristics of large numbers of Sphaerotheca fuligineas and high rates of poisoning in recent years, according to the characteristics of Smilax grisea transfer and the incidence of maize rough dwarf diseases, a strategy of “cutting off the source of poisons, controlling pests and controlling diseases, and comprehensive prevention and control” is adopted for prevention and control. .

The selection of disease-resistant varieties based on the results of recent surveys shows that there are differences in the occurrence of diseases between adjacent plots. All localities unanimously reported that diseases such as Yuqing 1, Linao 1, and Zhengdan 958 were severely affected, and the diseased strain rate was generally between 5% and 10%, while Nongda series strains were lighter and the diseased strain rate was below 2%.

After proper control of wheat harvest, an early control and summer corn crop was controlled to control the amount of adults in the field. Summer corn 3 to 4 leaf stage comprehensive treatment of ash fly cricket, in order to ensure the effect, every 7 days and then control again. Imidacloprid and other agents can be used. To achieve a unified time, a unified pharmacy, a unified method, a unified application of drugs to improve disease prevention.

Pull out the diseased plant to remove field strains in time to avoid becoming a source of reinfection. For individual severely affected fields, timely destruction and conversion of legume crops to reduce economic losses.

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