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柿绒粉蚧(柿绵蚧)Eriococcus kaki Kuwana在广西灌阳县1年发生6代,以若虫和成虫在树干裂皮缝、缝隙,1、2年生枝条轮痕、芽基、芽鳞片及干柿蒂上越冬,次年柿树萌芽期开始活动。第1代～第6代低龄若虫高峰期分别为3月下旬～4月上旬初、5月下旬末～6月上旬初、6月下旬末～7月上旬初、8月上旬～中旬初、9月上旬初～中旬初及10月中旬初～11月上旬初。卵期7～18d,若虫期22～136d,成虫期6～140d。柿芽萌动前用99.1%机油乳剂180倍液(敌死虫)或20%松脂酸钠(融杀蚧螨)150倍液清园喷杀,防治效果分别达88%、79.8%。第1代低龄若虫高峰期用40%毒死蜱乳油1000倍液加25%噻嗪酮(扑虱灵)可湿性粉剂1500倍液喷雾,防治效果99.6%,80%敌敌畏乳油800倍液加10%吡虫啉可湿性粉剂2000倍液防治效果达99.1%,3%啶虫脒可湿性粉剂(3%金世纪)2500倍液防治效果99.5%。
Eriococcus kaki Kuwana occurred in Guanyang County, Guangxi Province for 6 generations in 1 year. The nymphs and adult pests were found in cracks and gaps in the stems of tree trunks. Branches of rickets, buds, buds and dried persimmon Di on the winter, the following year persimmon germination began. The first to the sixth generation of young nymphs were peaked from late March to early April early, late May ~ early June early, late June ~ early July early, early August ~ mid early, 9 Beginning of early ~ mid early and early October ~ early November early. Egg stage 7 ~ 18d, nymph period 22 ~ 136d, adult stage 6 ~ 140d. Before persimmon bud germination with 99.1% oil emulsion 180 times (enemy dead insects) or 20% sodium rosinate (melts and sedges mites) 150 times liquid Qingyuan spray, the control effect of 88%, respectively, 79.8%. The first generation of nymphs at the peak with 40% chlorpyrifos EC 1000 times plus 25% buprofen WP (Phlorizen) WP 1500 times spraying, prevention and control of 99.6%, 80% dichlorvos 800 times plus 10% imidacloprid WP 2000 times prevention and control of the effect of 99.1%, 3% acetamiprid WP (3% of the golden century) 2500 times the prevention and control of 99.5%.