哒螨灵防治柑桔红蜘蛛试验近年来，黔北地区柑桔栽植面积不断扩大，柑桔红蜘蛛常年大暴发，夏季为大发生高峰期。据９６～９７年调查；每年５月中下旬至６月上旬，百叶虫口密度由５４头上升到１万头，６月中下旬到２万头。大面积柑桔叶色变白，甚至脱落，严重影响树势和果... In recent years, the planting area of ​​citrus in northern Guizhou has been expanding. The perennial outbreak of citrus spider mites has occurred, and the peak has occurred in summer. According to the survey from 1996 to 1997, from mid-late May to early June each year, the population density of the insect increased from 54 to 10,000 and from mid-to late June to 20,000. Large citrus leaves turn white, or even fall off, seriously affecting the tree and fruit ...