柿绒蚧生物学特性与防治研究

Biological Features and Control of Eriococcus Kaki Kuwana

柿绒蚧以越冬代和第1代若虫为害新梢、柿叶、花蕾；第2至4代为害柿果。在安徽黄山1年发生4代,以2龄若虫固定在柿树树干、枝条和皮层的裂缝中,包藏在半透明的腊壳中越冬。该虫发生与全年候、食料、天敌等环境有关。在早春喷洒石硫合剂可有效地消灭越冬若虫。4月中旬用久效磷＋敌敌畏＋特效王800倍防效达80％。6月中旬用杀扑磷1000倍喷洒防效达98％以上。

Eriococcus kaki Kuwana/s nymph of overwintering and the first generation harm new tip, leaf and bud of Diospyros kaki. The second to the fourth generation become harmful to Diospyros kaki fruit. Four generations take place in one year in Huangshan, Anhui Povince. The rymph with 2 ages fix in the cortex of the trunk, branch and the vertical craeks of Diospyros kaki by hiding in the semitrans parant cured shell through the winter.This worm takes place and hax something to do with environments such as climate, foodstuff and natural enemy, of the whole yeay. It con eliminate over wintering/s nymph by spraying lime sulfur in early spring. The efficiency of monolrotophos＋DDv＋mirale drug is up to 80% in mid-April. The efficiency of methidathion is up to 98% in mid-June.