CAJ | 학술논문

随着黑龙江省马铃薯地上垄体栽培模式推广面积的逐年增加,其害虫的防控技术已经成为制约该模式下马铃薯生产的重要环节,为解决这一问题,特设立6种化学及生物杀虫剂(5%吡虫啉乳油2000倍液、3%啶虫脒乳油3000倍液、48%乐斯本乳油2000倍液、30%速克毙乳油2000倍液、40%氧化乐果乳油2000倍液、2%阿维菌素乳油2000倍液)进行马铃薯瓢虫及蚜虫的田间药效比较试验及3%啶虫脒乳油对马铃薯瓢虫幼虫的室内杀虫活性的测定.经过对校正防效和虫口减退率比较分析,结果表明:3%啶虫脒乳油对马铃薯瓢虫与蚜虫施药7 d后的防效最高,分别达到84.94%和94.99%;其虫口减退率也最高,分别达到77.12%和92.04%.通过对LD50值比较6种药剂对马铃薯瓢虫的毒力,其中毒力最大的为3%啶虫脒乳油, LD50值为0.05.3%啶虫脒乳油对马铃薯瓢虫幼虫的72 h LD50为21.22 mg/L.由此可见,3%啶虫脒乳油是防治马铃薯瓢虫及蚜虫的有效药剂.
수착흑룡강성마령서지상롱체재배모식추엄면적적축년증가,기해충적방공기술이경성위제약해모식하마령서생산적중요배절,위해결저일문제,특설립6충화학급생물살충제(5%필충람유유2000배액、3%정충미유유3000배액、48%악사본유유2000배액、30%속극폐유유2000배액、40%양화악과유유2000배액、2%아유균소유유2000배액)진행마령서표충급아충적전간약효비교시험급3%정충미유유대마령서표충유충적실내살충활성적측정.경과대교정방효화충구감퇴솔비교분석,결과표명:3%정충미유유대마령서표충여아충시약7 d후적방효최고,분별체도84.94%화94.99%;기충구감퇴솔야최고,분별체도77.12%화92.04%.통과대LD50치비교6충약제대마령서표충적독력,기중독력최대적위3%정충미유유, LD50치위0.05.3%정충미유유대마령서표충유충적72 h LD50위21.22 mg/L.유차가견,3%정충미유유시방치마령서표충급아충적유효약제.
With increase in the area planted to potato in aboveground ridge cultivation model in Heilongjiang province, the pest prevention and control technology become an important part in potato production in this area. In order to solve the problem of pest control, six pesticides (5%Imidacloprid EC 2 000 times liquid, 3%Acetamiprid EC 3 000 times liquid, 48%Chlorpyrifos EC 2 000 times liquid, 30%Fenpropathrin omethoate EC 2 000 times liquid, 40%Omethoate EC 2 000 times liquid, and 2%Abamectin EC 2 000 times liquid) were tested in field for ladybug and aphid control, and further 3% Acetamiprid EC was measured indoor for its insecticidal activity on larva of potato ladybug. According to the comparative analysis for corrected control effect and reducing rate, the results showed that for 3%Acetamiprid EC 7 d after sprayed for control of potato ladybug and aphid, corrected control effect was 84.94%and 94.99%and reducing rate was 77.12%and 92.04%, respectively. The effectiveness of 3%Acetamiprid EC was better than other pesticides. Based on the comparison of the value of LD50, the highest toxicity was 3%Acetamiprid EC in six pesticides for potato ladybug control, with LD50 value being 0.05 mg/L. The 3%Acetamiprid EC 72 h LD50 for potato ladybug larva was 21.22 mg/L. Thus, it could be concluded that 3%Acetamiprid EC was an effective pesticide for the prevention and control of potato ladybug and aphids.