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伏蚜是北方棉区棉花蕾铃期主要害虫之一,以往在未考虑棉花自身耐害补偿情况下,推行其防治指标为百株卷叶株率5%左右,近年来放宽到10%。这一10%的新防治指标虽有一定的试验研究依据,但随着棉花栽培水平的发展,其实用性与可行性需要检验。本文作者选择山东临清市路庄乡官庄村春直播棉田及汶上县辛店乡路林村麦套春棉田分别作为北方集中型和两熟型棉田进行小区试验,检验放宽后的防治指标,现将结果简报如下:
The aphids are one of the major pests in boll boll stage in the northern cotton area. In the past, the control index for the prevention and control of cotton leaf blight was about 5% without considering the compensation of cotton itself, and relaxed to 10% in recent years. Although this 10% new control index has some experimental basis, its practicality and feasibility need to be tested with the development of cotton cultivation. The authors selected Shandong Linqing Luzhuang Township official Zhuangcun spring direct seeding cotton fields and Wenshang County Xindian Lu Lincun Maoshuichun cotton as a centralized and two-type cotton fields in the northern community test to test the control indicators after the relaxation, the present Briefing the results as follows: