论文部分内容阅读
棉花伏蚜是指伏天高温条件下,快速繁殖而形成一类蚜虫群体。与其他时期的棉蚜相比,它繁殖速度快,发生量大,呈现暴发性危害。近几年,许多农民朋友都反映棉花伏蚜很难防除,用溴氰菊酯等高效低毒农药轮番喷施也治不住。由于抗虫棉对棉蚜的抗性低,随着抗虫棉的推广,伏蚜危害呈快速上升趋势,已成为难防难治的主要害虫。伏蚜大暴发年份若防治失误,会造成棉株叶片和蕾铃大量脱落,产量和品质
Cotton aphid refers to the rapid days under high temperature conditions, the rapid breeding and the formation of a group of aphids. Compared with other cotton aphids in the other times, it reproduce fast, the occurrence of large, showing an explosive hazard. In recent years, many farmers’ friends have reported that it is very hard to control cotton aphids and spraying high efficiency and low toxicity pesticides such as deltamethrin can not be cured. As the resistance of cotton to aphids was low, the harm of aphids rose rapidly with the promotion of insect-resistant cotton and became the main insect pest. Aphid large outbreak years if the control errors, will cause a large number of cotton leaves and buds fall off, yield and quality