10种新型药剂对苹果叶螨的田间药效

笔者在河南三门峡市苹果产区,进行了10种药剂17个处理防治苹果叶螨的田间药效试验。结果表明,各药剂处理对苹果叶螨均有较好的防治效果。其中10%浏阳霉素750倍、1500倍、1%甲氨基阿维菌素9000倍、1 8%阿维菌素2500倍、5000倍、50%宝路可湿粉剂2000倍、毙百虫500倍处理第1～14天,3%莫比朗1000倍第1、3天,2000倍第1、3、7天,2 5%菜喜1000倍、2000倍、15%哒螨灵第3～14天,1%甲氨基阿维菌素12000倍、毙百虫1000倍第3天的校正防效均在95%以上。植物源农药2 5%烟碱苦参碱500倍、1000倍第1天的校正防效较低,分别为73 2%、62 2%,第3天为87 5%、87 8%,第7天为93 5%、91 9%,第14天为89 2%、88 5%,毙百虫1000倍第1、3、7、14天的防治效果分别为93 8%、96 8%、94 6%、92 0%,均取得了较好的防治效果。5%卡死克2000倍的防治效果较差,第1、3、7、14天的防治效果分别为77 4%、84 9%、86 0%、71 8%。

Efficiency of Ten New Pesticides on Red Spider Mites in Apple Orchard

The control efficiency of ten new pesticides on red spider mites (tetranychids) was examined in apple orchards with 17 treatments. The results showed that all the treatments had good efficiency. The treatments that achieved over 95% correct control efficiency were as follows: 10% Liuyangmycin EC in 750 and 1500 time solution, 1% Methylamine avermectin EC in 9000 time solution, 1.8% Avermactin EC in 2500 and 5000 time solutions, 50% Diafenthiuron WP 2000 time solution, Bibaichong EC 5000 time solution from the 1st day to the 14~th day; 3% Mospilan EC 2000 time solution on the 1~st day, the 3~rd day and the 7~th day; 2.5% Spinosad FP 1000, 2000 time solution and 15% Pyridaben 2500 time solution from the 3~rd day to the 14~th day; 1% Methylamine avermectin EC 12000 time solution and Bibaichong EC 1000 time solution in the 3day. The botanic pesticide 2.5% nicotin-matrine EC 500 and 1000 time solution showed lower control efficiency in the 1~st day but achieved 87.5%, 87.8% on the 3~rd day, 93.5%, 91.9% on the 7~th day and 9.2%, 88.5% on the 14~th day, respectively. Bibaichong 1000 time solution also showed good control efficiency with the value 93.8%, 96.8%, 94.6%, 92.0% on the 1st, 3rd, 7th and 14th day respectively. 5% Flufenaxuron EC 2000 time solution showed lower control efficiency with the value 77.4%, 84.9%, 86.0%, 71.8% on the 1st, 3rd, 7th and 14th day, respectively.