墨玉县真葡萄粉蚧发生规律及防治技术研究

Studies on the Occurrence Law and Control Methods of Pseudococcus maritimus (Ehrhorn) in Moyu County

2004-2006年，在新疆墨玉县对真葡萄粉蚧发生规律及防治技术进行了调查研究。结果表明，真葡萄粉蚧在墨玉县一年发生3代，以若虫藏在老蔓翘皮下、裂开处和根基部分的土壤内群体越冬。3月中下旬葡萄树出土萌动时越冬若虫开始活动危害，4月中旬越冬代雌成虫出现，4月底5月初开始产卵，若虫于5月中旬孵化。第一代雌成虫6月中旬出现，7月初开始产卵，若虫于7月上旬孵化；第二代雌成虫8月中旬出现，8月下旬开始产卵，若虫于9月初孵化，10月开始越冬。此虫有四次最佳药剂防治适期，第一次为4月中旬；第二次为6月下旬；第三次为8月中下旬；第四次为11月，即葡萄秋季修剪后埋土前。该虫防治应采用综合防治措施。尽量减少药剂防治次数。

The occurrence law and control techniques of Pseudococcus maritimus （Ehrhom） in Moyu County, Xinjiang in 2004-2006 were studied and investigated. The results indicated that Pseudococcus mar-itimus has 3 generations annually, the nymph of which hides in the soil under the old bark and cracks of the grapevine to overwinter. The overwintering nymph begins to damage grape in the middle ten days of March. The over-wintering femaleaduh insect begins to lay eggs in the end of April and at the beginning of May. The nymph hatches in the middle ten days of May. The first generation of the female insect is hatched in the middle ten days of June, which begins to lay eggs at the beginning of July. The nymph hatches in the first ten days of July; The second genera-tion of female adult insect appears in the middle ten days of August , which begins to lay eggs in the last ten days of August. The nymph hatches at the beginning of September, which begins to overwinter in October. There are 4 times for the nymph to be controlled the most effectively by insecticide control .The 1st time is the middle ten - day period of April; The 2nd time is the last ten - day period of June; The 3nd time is the middle and last 20 days of August. The 4th time is the period of November, namely, after pruning grape in autumn and before covering grape by soil. The integrated control measures should be conducted to control the Pseudococcus maritimus. The insecticide control should be reduced as far as possible.