㮈树瘿螨转芽期规律观察及其防治试验

Occurrence Pattern Observation and Control of Eriophyid Mite in Prunus salicina var.Cordata during Bud Formation Period

经田间调查与防治试验:在连城县树瘿螨于2月中旬至4月中旬在受害芽内虫量不断增加,4月中下旬开始减少,6月下旬受害芽干枯后芽内未检出;5月上中旬至6月底为树瘿螨转芽期,成虫从患芽向新芽转移。由于当树瘿螨进入芽内后,受到芽鳞片遮蔽难以防治,因而防控时间应掌握在5月上中旬至6月底的瘿螨转芽期进行药剂防治,并保证防治次数不少于2次。5%阿维菌素+唑螨酯、5%阿维菌素+虱螨脲、虱螨脲+毒死蜱等药剂组合均有较好防治效果,因各组药剂在常规浓度下防治效果没有差异,说明没有交互作用或交互作用弱,因此,在实际中应用中可单独用5%阿维菌素、唑螨酯、虱螨脲、毒死蜱交替进行防治。

In our study, field investigation and control experiment of eriophyid mite in Prunus salicina var. Cordata were carried out. The results showed that eriophyid mite number was increasing inaffected buds from mid-February to mid- April while number was decreasing in mid to end-April and was not found until June. Buds of Prunus scdicina vat. Cordata were formed fi＇om early to mid-May to end of June. Adults of eriophyid mite moved from affected buds to newly buds. It is difficult to control eriophyid mite because of closed bud scale when it moved into buds. So, it is eftective to control eriophyid mite by chemicals of more than two times from early to mid-May to end of June.5% abamectin ＋ azole mite ester, 5% abamectin ＋ lice mite urea and lice mite urea ＋ chlorpyrifos hadbetter control effects.There was no significant difference among three groups of agents with normal concentration, showing no or weak interacts. Therefore, 5% abamectin, mite ester, lice mite urea andchlorpyrifos could be applied alternatively for control ling eriophyid mite in Prunus scdicina.