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建立了黑刺粉虱的发生期预测式和发生量预测式,在闽东北地区验证,其准确率达90%以上;确立了动态防治经济阈值,一般为每叶6头。韦伯虫座孢菌对黑刺粉虱幼虫的致病力强,并能寄生蛹,田间大面积应用防治效果在70%以上,持效达2年以上。卵孵化10%—20%时使用25%扑虱灵,防效达80%—90%。研究表明:利用虫生真菌、昆虫生长调节剂和叶面肥(混用),能有效地控制黑刺粉虱的危害,经济效益、社会效益和生态效益明显
The prediction formula of the occurrence period and the occurrence amount of B. tabaci were established. The accuracy of the prediction was over 90% in the northeast of Fujian Province. The economic threshold of dynamic control was established, which was generally 6 leaves per leaf. Weber worm conidia on the black borer larvae virulence and can parasitic pupae field application of large area control effect in more than 70% for up to 2 years. When hatching 10% -20% of the eggs, 25% of suprofol is used, and the anti-efficacy reaches 80% -90%. The results show that: the use of fungi, insect growth regulator and foliar fertilizer (mixed), can effectively control the blackfly whitefly hazards, economic, social and ecological benefits significantly