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Position: Home > Articles > STUDY ON THE OPTIMUM SPRAYING TIME AND ECONOMIC THRESHOLD OF SOYBEAN APHID Journal of Plant Protection 1991,18 (2) 155-159

大豆蚜防治适期与防治指标研究

作  者:
何富刚;颜范悦;辛万民;李小平;王艳琴;张广学
单  位:
中国科学院动物研究所;辽宁省农业科学院植物保护研究所
关键词:
大豆蚜;防治适期;经济阈值
摘  要:
在辽宁,6月下旬大豆蚜种群增长最快,是大豆蚜防治的关键时期。日前,生产上推行百株蚜量一万头的防治指标,可放宽。辽河中下游平原铁丰18大豆,可放宽到2.38—4.07万头;辽豆3号放宽到2.65—3.30万头。以查蚜量为指标,生产上应用困难较大。经研究,卷叶株率与百株蚜量密切相关,(?)=4.283+1.8419x(r=0.90)所以提出以卷叶株率为大面积生产防治的指示指标,铁丰18为10%,辽豆3号为8%。
译  名:
STUDY ON THE OPTIMUM SPRAYING TIME AND ECONOMIC THRESHOLD OF SOYBEAN APHID
作  者:
He Fugang;Yan Fanyue;Xin Wanmin;Li Xiaoping;Wang Yanqin Institute of Plant Protection,Liaoning Academy of Agricultural Sciences,Shenyang Zhang Guangxue Institute of Zoology,Academia Sinica,Beijing
关键词:
soybean aphid;;optimum control period;;economic threshold
摘  要:
In Liaoning Province,the peak growing rate of soybean aphidAphis glycines Matsumura population and the sensitive time of Soybeanto aphid damage are in late June,this is the key period for soybeanaphid control. It is indicated that the prevalent control threshold,i.e.10,000aphids/100 plants,can be relaxed to 23,800—40,700 aphids/100 plants forvariety Tiefeng 18 and 26,500—33,000 aphids/100 plants for varietyLiaodou 3 in middle and lower reaches of Liaohe River.It is inconvenient in practice to use the aphid number as economicthreshold;thus,the 10% and 8% rolled leaf plant(the central leavesmore than 30 degrees rolled obverse-and reversely and above)fates forTiefeng 18 and Liaodou 3,respectively,are proposed as the substi-tutes,based on the following close relation equation of rolled leaf rateand aphid number/100 plants:y=4.283+1.8419x(r=0.90)Where y is rolled leaf rate,and x is aphid number/100 plants.

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