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Position: Home > Articles > THE EFFECT OF CEREAL APHID ON THE YEILD OF WINTER WHEAT IN BEIJING SUBURBS Journal of China Agricultural University 1983,12 (3) 45-50

北京郊区麦蚜为害对小麦产量的影响

作者：

郑炳宗;王政国

摘要：

麦蚜是北京郊区小麦主要害虫之一,麦蚜有四种,但最主要的是麦长管蚜(Sitobion avenea(F)),为害主要在穗期,从灌浆始期至末期(5月18—27日)约10天是影响小麦产量的关键时期。灌浆前中期(5月21—23日)的蚜量与小麦千粒重呈极显著的负相关。从三块麦田百株蚜量与小麦千粒重的直线回归方程计算出百株千头小麦千粒重损失分别为3.6%、2.48%和3.81%,平均3.3%。以北京郊区亩产400斤计算,防治可挽回小麦损失11.8斤,因此我们认为以灌浆前中期百株千头蚜虫为防治指标是合适的通过1981—1982年麦蚜发生的系统调查资料计算初步提出监视和短期测报的防治指标为百株蚜量抽穗末期60头,盛花期250头,和扬花末灌浆初420头供参考及生产上进一步考验修正

译名：

THE EFFECT OF CEREAL APHID ON THE YEILD OF WINTER WHEAT IN BEIJING SUBURBS

作者：

Zheng Bingzong Wang Zhengguo

摘要：

Studies were carried out in Beijing during 1981—1982 to investigate the dynamics of abundance of cereal aphid,its effect on the yield of winter wheat and the possibility of short term forecasting of damage, Winter wheat was seriously infested by cereal aphid in 1982,of which sitobion avenea(F)was the most important.The aphid popula- tion increased rapidly from the beginning of the heading stage to the peak at the end of watery ripe,the most critical period of infestation being about 10 days from the beginning to the end of watery ripe sta- ge.So the writers considered the beginning of watery ripe as the pro- per time for chemical control.A simgle application of pirimor at this time resulted in a yield increase of 24.8% in 1982. The number of aphids per 100 plants was negative significant cor- relation with the weight per 1000 ggrains in the fore to middle stage of watery ripe(May 21-23).At this time,the average loss of yield per 1000 aphids per 100 plants was 3.3%,which the writers regarded as the critical control level. Aphid population increased an average 19.1,3.9,and 2.4 times be- tween the end of heading,the middle of flowering,and the end of flowering to the beginning of watery ripe stage respectively,and the time of fore to middle watery stage of ripeness.This enabled us to establish a system of surveillance and short term forecasting.

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北京郊区麦蚜为害对小麦产量的影响

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