论文部分内容阅读
一、防治棉蚜虫兼治红蜘蛛。当蚜虫危害植株10%左右,或卷叶植株有3%时,应及时施药防治,以喷施叶背面及嫩尖为主。有效药剂有:亩用50%复果乳油50~100毫升,或25%多杀菊酯乳油30~50毫升,或40%水胺硫磷乳油50~80毫升,均兑水50~60公斤交替使用。二、防治红铃虫兼治棉蚜和红蜘蛛。红铃虫危害期长,现蕾至秋桃成熟均可危害。所以现蕾前应喷药预防,中后期应着重防治。有效药剂
First, the control of cotton aphids and red spider. When the aphids harm about 10% of the plants, or 3% of the leaf-rolled plants, it should be timely application of pesticides to spraying the back of the leaves and tender-based. Effective agents are as follows: 50 to 100 ml of 50% acne cream, 30 to 50 ml of 25% insecticidal cream, or 50 to 80 ml of 40% use. Second, the control of pink bollworm and treatment of aphids and spider mites. Red bollworm endanger the long period, budding to fall ripe peach can be harmful. Therefore, before spraying should be spray prevention, should focus on prevention and treatment in the late. Effective agent