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【目的】在杏树树体流动花芽膨大前,吐伦球坚蚧越冬代若虫体背开始产生蜡丝时,筛选出合适的药剂进行田间防治。【方法】用20种药剂对介壳虫若虫进行室内药剂筛选,并选择室内防效好的药剂进行田间防治试验。【结果】室内筛选出16种药剂,在药后第6 d其防效都大于90%,选择了其中11种药剂进行田间防治试验,药后12 d顺式氯氰菊酯1 500倍+甲维盐2 500倍混剂、蚧必治1 000倍液、金速扑杀+3%0#柴油及高效氯氰菊酯微乳剂+3%0#柴油防效均可达97%以上;毒死蜱+3%0#柴油、蚧虫毒1 000倍液、8Be石硫合剂、滴一滴8 000倍液、阿克泰4 000倍液的防效也可达94%以上。【结论】11种药剂对吐伦球坚蚧越冬代若虫均具有较好的防治效果。
【Objective】 In the process of blooming of flowering bud of almond tree, before the beginning of waxy filaments of overwintering nymphs in Tuol neballs, the appropriate agents were screened for field control. 【Method】 The indoor insecticides were screened by 20 kinds of insecticides against scale insects nymphs and the indoor antibiotics were selected to control the field. 【Result】 Sixteen pesticides were screened indoors. The control efficacy was over 90% on the 6th day after treatment. Eleven pesticides were selected for field trials. After 12 days of treatment, 1 500 times of cypermethrin + 500 times the mixture, scaly rule 1 000 times the liquid speed culling + 3% 0 # diesel and beta-cypermethrin microemulsion + 3% 0 # diesel control effect up to 97%; chlorpyrifos + 3% 0 # diesel , Scale insects 1 000 times, 8Be lime sulfur mixture, a drop of 8,000 times a drop, Aketai 4,000 times the control effect of up to 94%. 【Conclusion】 Eleven kinds of medicaments have better control effect on the overwintering nymphs of Tuodomenchus colchicus.