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1984～1985年在天柱县进行27205亩水稻主要害虫综合防治技术示范结果:桂朝二号栽培面积达综防区总面积的70～75％,明显减轻稻飞虱为害,减少用药3～5次;保护利用有益生物(蜘蛛等),生防效果达79.81～80.00％;害虫主害代积极用药挑治,杀虫双大粒剂防治二化螟保苗率达95.5～96.23％,杀虫双加叶蝉散混施防治稻纵卷叶螟和稻飞虱,虫口减退率为74.8～80.1％和78.3～89.8％;不同药剂及施药方法,通过田间试测对白背飞虱防效达90％以上的有3个药剂,对稻纵卷叶螟防效达80以上的有2个药剂;不同器械喷雾技术对稻纵卷叶螟和稻飞虱的防效,分别达80.0～99.2％和79.8～88.3％,其中以弥雾法防效最佳,以吹雾法杀虫单20克加叶蝉散15克用法最经济。亩用杀虫双纯药50克,残留量低于允许标准水平2.5ppm。综防区经济效益显著,两年平均每亩比综防前净增干谷26.76公斤,亩防虫投资仅3.73元,比非综防区9.49元低两倍多。
From 1984 to 1985 in Tianzhu County, 27,205 mu of rice major pests integrated prevention and control technology demonstration results: Gui Cha II cultivated area of the total area of 70 ~ 75% of the total area, significantly reduce planthopper damage, reduce medication 3 to 5 times ; Protection of the use of beneficial organisms (spiders, etc.), the biological control effect of 79.81 ~ 80.00%; the main victims of insecticide active treatment, insecticide double large granules prevention and control of the Chilo suppressalis seedling rate of 95.5 ~ 96.23% Cicada was mixed with the prevention and treatment of rice leaf roller and planthopper, the reduction rate of insects was 74.8 ~ 80.1% and 78.3 ~ 89.8%; different pesticides and application methods, field tests on white -backed plant hopper control over 90% Of the three agents, the rice leafroller control effect of more than 80 have 2 agents; different device spray technology on rice leaf roller and planthopper control effect, respectively, 80.0 ~ 99.2% and 79.8 ~ 88.3%, of which the best anti-Miesha law to blow the law to kill a single 20 grams of leafworm powder and leafhoppers scattered 15 grams of the most economical use. M of 50 grams of pesticides double-puree, residual amount below the allowable standard level of 2.5ppm. Comprehensive prevention zone economic benefits significantly, the average per mu for two years than the pre-prevention net increase of dry valley 26.76 kilograms, mow pest investment was only 3.73 yuan, 9.49 yuan more than non-integrated zone more than twice as low.