论文部分内容阅读
研究和实践表明,把不同种作物通过间作、套种或混种等形式,科学搭配种植,往往可以控制或减轻某些病虫害的发生,从而收到不施农药、胜施农药的效果。1.麦棉套种这种配植方法对控制棉花苗期蚜虫十分有利。麦套棉由于小麦的屏障作用,不仅直接影响棉蚜迁入,而且棉田温度要比单作田低1℃左右,再加上麦行天敌的作用,不用施药即可控制蚜虫为害。2.麦烟套作由于麦株能阻碍烟蚜迁飞降落,再加上麦田七星瓢虫等天
Research and practice have shown that it is often possible to control or mitigate the occurrence of some pests and diseases by substituting different crops in the form of intercropping, intercropping or intercropping and planting in a scientific way so as to receive the effect of not applying pesticides and winning pesticides. 1. Wheat Interplanting This method of planting cotton aphids control of the seedling is very favorable. Wheat wheat cotton barrier effect, not only directly affect the cotton aphid immigration, and the cotton field temperature is lower than the single field about 1 ℃, coupled with the role of wheat line natural enemies, without spraying pesticides to control aphids. 2. Tobacco sets as a result of wheat plants can hinder the smoke aphids migrate landing, coupled with other fields such as ladybird ladybird