衡阳水稻主要病虫害全程组合用药控害增产技术

为达到水稻重大病虫害防控减量用药、有效控害和增效增产的目的,在中稻上实施全程组合用药示范。结果表明,将稻腾、艾美乐、吡蚜酮、拿敌稳、安泰生5种药剂作为衡阳水稻主要病虫害全程组合用药的防治药剂,防治效果明显优于常规防治区,每季中稻减少施药次数1～2次,减少药剂用量（商品量）63.89%;二化螟、稻纵卷叶螟、稻飞虱、纹枯病和稻曲病的防治效果分别达92.43%、93.44%、94.04%、85.97%和90.78%;平均产量增加111.26 kg/667m^2,平均增收145.55元/667m^2。

Main Rice Diseases and Insect Pests Control by Full-Period Combined Chemical Use for High Yield in Hengyang

In order to reduce chemical use and effectively control major diseases and insect pests in rice to improve rice production, the combined chemical application was conducted over mid-season rice in the test. The results showed that when the Dateng, imidaclop,pymetrozine, Nadiwen and antracol as the major medicaments were used, the control efficiency was obviously better than the conventional control, chemical delivery in every season was decreased by 1 or 2 times, down 63.89% of reagent dosage. the control efficiency of chilo suppressalis, rice leaf folder, rice planthopper, banded sclerotial blight and false smut were 92.43%,93.44%, 94.04%,85.97% and 90.78%,respectively. The average yield increased 111.26 kg per 667m^2 and every 667m^2 average increased 145.55 yuan.