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绿盲蝽(Lygus lucorum Meyer-D(?)r)从八十年代开始,已成为上海郊区棉花主要害虫之一,对棉花产量影响很大。我们在1983年与1984年研究了该虫的危害,提出了相应的防治指标。试验在小区及大田中进行。结果表明各代为害单株减产率分别为:第二代35.20％,第三代31.30％,第四代29.40％。不同为害株率(X)与减产率(Y)的关系式分别为:第二代Y=0.2832+0.3661X;第三代Y=-0.2651+0.3370X;第四代Y=0.7979+0.2309X。利用以上各代为害减产率关系式,结合当地生产水平,即可确定防治指标。在上海地区各代的防治指标分别为:第二代为害株率6％,第三代为害株率10％,第四代为害株率11％。
Since the 1980s, Lygus lucorum Meyer-D (?) R has become one of the main cotton pests in the suburbs of Shanghai and has a great impact on cotton yield. We studied the harm of the pest in 1983 and 1984, and put forward the corresponding control index. Experiments in the district and the field. The results showed that the yield per plant was reduced to 35.20% in the second generation, 31.30% in the third generation and 29.40% in the fourth generation. The relationships between different damage rate (X) and yield (Y) were as follows: the second generation Y = 0.2832 + 0.3661X; the third generation Y = -0.2651 + 0.3370X; the fourth generation Y = 0.7979 + 0.2309X. Take advantage of the above-mentioned yield reduction rate of the various generations, combined with the local level of production, you can determine the prevention and control targets. In Shanghai, the prevention and control index of each generation were as follows: the second generation damaged 6%, the third generation damaged 10%, the fourth generation damaged 11%.