论文部分内容阅读
小麦蚜虫是危害我省小麦的主要害虫,常年蚜害损失10％～20％,严重的达30％以上。生产上采用化学药剂防治时,由于缺乏科学的防治指标,盲目施药,施药次数多,而防治效果差。还导致农药污染环境和影响小麦的品质。对蚜虫危害小麦损失的估计是探讨制定防治指标的基本依据,为此1988～1990年对麦蚜危害小麦产量的损失进行了研究,结果表明麦蚜不同危害量(累计蚜量),对小麦不同生育阶段造成的产量损失有极显著的差异。
Wheat aphids are the major pests that endanger the wheat in our province. Perennial pest losses of 10% to 20%, severe up to 30%. Production of chemical control, due to the lack of scientific indicators of prevention and control, blind application of pesticides, pesticides and more times, and poor control. It also causes pesticides to pollute the environment and affect the quality of wheat. Estimating the loss of aphids to wheat is to explore the basis for the establishment of control index. Therefore, the loss of wheat aphid affected by wheat aphid was studied from 1988 to 1990. The results showed that different amounts of wheat aphid (cumulative aphid) Yield loss caused by the fertility stage has very significant differences.