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防治柑橘木虱是有效控制柑橘黄龙病疫情扩散蔓延的重要举措。为筛选高效安全药剂,进行了不同药剂及其组合混用的田间药效试验。结果表明,植物源农药5%d-柠檬烯可溶水剂对柑橘木虱具有较好的速效性,较强的持效性,药后14 d的防效仍高达93.7%。70%吡虫啉水分散粒剂、50%烯啶虫胺可溶粉剂、20%呋虫胺可溶粒剂、22%氟啶虫胺腈悬浮剂对柑橘木虱都具有很好的速效性,药后1 d的防效在96.8%~99.6%。70%吡虫啉水分散粒剂、50%烯啶虫胺可溶粉剂的持效性较好,药后14 d的防效分别为91.3%和90.3%,而22%氟啶虫胺腈悬浮剂的防效下降明显。5%d-柠檬烯可溶水剂与70%吡虫啉水分散粒剂混用对柑橘木虱具有很好的速效性和持效性,药后1、7、14 d的防效在94.1%~97.7%;而5%d-柠檬烯可溶水剂与22%氟啶虫胺腈悬浮剂混用防治柑橘木虱的速效性好,但持效性不够理想。生产上防治柑橘木虱,可选用植物源农药5%d-柠檬烯可溶水剂250倍液(200 mg·kg~(-1)),或70%吡虫啉水分散粒剂15 000倍液(46.7 mg·kg~(-1)),或5%d-柠檬烯可溶水剂500倍液(100 mg·kg~(-1))+70%吡虫啉水分散粒剂15 000倍液(46.7 mg·kg~(-1)),或50%烯啶虫胺可溶粉剂3 000倍液(166.7 mg·kg~(-1))进行喷雾处理,可有效控制柑橘木虱的危害。
Prevention and control of citrus psylla is an important measure to effectively control the spread and spread of the citrus Huanglongbing epidemic. In order to screen highly effective and safe medicaments, the field efficacy trials of different medicaments and combinations thereof were conducted. The results showed that plant-based pesticide 5% d-limonene water-soluble agent had good fast-acting and strong persistence to citrus psyllid, and the control effect was as high as 93.7% after 14 days. 70% imidacloprid water dispersible granules, 50% nitenpyram soluble powder, 20% dinotefuran soluble granules and 22% nitrofuranton suspension are good for citrus psyllid, and the medicine After 1 d of the effectiveness of 96.8% ~ 99.6%. 70% imidacloprid water dispersible granules and 50% nitenpyram soluble powder had good efficacy, the control effects on the 14th day were 91.3% and 90.3%, respectively, while those of 22% Control effect decreased significantly. The combination of 5% d-limonene water-soluble agent and 70% imidacloprid water-dispersible granules had good effect and persistence on Citrus psyllid, with the control effect at 1, 7 and 14 d after treatment was 94.1% -97.7% ; While the combination of 5% d-limonene water soluble agent and 22% nitrofurantin suspension was effective in controlling citrus psyllid but the effect was unsatisfactory. Production of citrus psyllid control, the choice of plant-based pesticides 5% d-limonene soluble agent 250 times (200 mg · kg -1), or 70% imidacloprid water dispersible granules 15 000 times (46.7 mg · kg -1 or 500 mg of 5% d-limonene soluble agent (100 mg · kg -1) + 15% imidacloprid water dispersible granule (46.7 mg · kg -1) kg -1, or 300% of the 100% nitenpyram powder (166.7 mg · kg -1), could effectively control the harm of citrus psyllid.