摘要:
通过选择性试验,研究烟粉虱的寄主选择性差异,进而开展诱集植物筛选及其对烟粉虱诱集效果的评价。结果表明,烟粉虱成虫明显嗜好黄瓜,然后依次为甘蓝、番茄、茄子、豇豆、四季豆、西葫芦、丝瓜,对毛豆、苘麻和辣椒的嗜好性较差;毛豆田间作黄瓜作为诱集植物对烟粉虱成虫的诱集效果达90.2%,防治效果为82.83%。配套施药试验结果表明,22.4%螺虫乙酯悬浮剂、10%烯啶虫胺水剂、10%联苯菊酯乳油和25%吡蚜酮可湿性粉剂能有效控制诱集植物黄瓜上的烟粉虱成虫,药后7d防治效果分别达82.72%、78.71%、67.39%和74.34%。
Abstract:
Experiments to examine the host selection of the pest,Bemisia tabaci,was conducted in laboratory.The most preferred plant by the pests was used in a field test to determine its efficiency in attracting B.tabaci for an integrated pest management application.The results showed that B.tabaci strongly preferred the cucumber(Cucumis sativus),followed by cabbage(Brassica oleracea),tomato(Lycopersicon esculentum),eggplant(Solanum melongena),cowpea(Vigna sinensis),kidney bean(Phaseolus vulgaris),squash(Cucurbita moschata),and loofah(Luffa cylindrical),but was poorly attracted to soybean(Glycine max),piemarker(Abutilon theophrasti)and pepper(Capsicum frutescens).As a trap plant,cucumber was intercropped with soybeans in a field that attracted adult whiteflies at a rate of 90.2% with a pest control efficiency of 82.83%.Subsequently,several insecticides were applied on the cucumber plants showing varying degrees of control efficacy on adult whiteflies.Among the insecticides tested,22.4% spirotetramat SC,10% nitenpyram EC,10% bifenthrin EC and 25% pymetrozine WP showed greater control efficiencies of 82.72%,78.71%,67.39% and 74.34%,respectively,7days after treatment.
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