回答棉鈴蟲(chóng):一般可用2.5%氯氟氰菊酯乳油(2000-2500倍液)或2.5%高效氯氰菊酯乳油(2000-2500倍液)進(jìn)行噴霧防治。蚜蟲(chóng):可在發(fā)病初期用10%吡蟲(chóng)啉可濕性粉劑(2000-3000倍液)或20%啶蟲(chóng)脒可濕性粉劑(5000-10000倍液)進(jìn)行噴霧,每隔7-10天噴1次,連續(xù)噴2-3次。
回答棉鈴蟲(chóng):一般可用2.5%氯氟氰菊酯乳油(2000-2500倍液)或2.5%高效氯氰菊酯乳油(2000-2500倍液)進(jìn)行噴霧防治。蚜蟲(chóng):可在發(fā)病初期用10%吡蟲(chóng)啉可濕性粉劑(2000-3000倍液)或20%啶蟲(chóng)脒可濕性粉劑(5000-10000倍液)進(jìn)行噴霧,每隔7-10天噴1次,連續(xù)噴2-3次。