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Position: Home > Articles > COTTON YIELD LOSS CAUSED BY VERTICILLIUM WILT AND ABILITY OF COTTON FOR COMPENSATION Acta Phytopathologica Sinica 1987 (3)

棉花黄萎病产量损失及补偿作用研究

作者：

姚耀文;石磊岩;胡旭;程远大;韦成明;孔祥兰;王恩柱

单位：

中国农科院植物所

摘要：

试验结果表明,棉花黄萎病群体损失,病指为5.0—53.0时,皮棉损失率为7.60—38.53%.回归分析的结果,棉花皮棉产量损失率(Y)与黄萎病群体病指(x)之间的关系,可用下述回归式来表示:y=0.659+0.63x±7.92 r=0.8557 n=8调查结果还表明,在黄萎病田里,棉花对病害为害的补偿能力,在湖北天门和河北丰南分别为23.5%和24.8%。自然补偿作用主要表现在总铃数的增加上,而与单铃重,衣分之间的补偿关系不明显.

译名：

COTTON YIELD LOSS CAUSED BY VERTICILLIUM WILT AND ABILITY OF COTTON FOR COMPENSATION

作者：

Yao Yaowen Shi Leiyan Hu Xu(Institute of plant protection,Chinese Academy of Agricultural Sciences)Chen Yuanda Wei Chengming (Plant Protection Station,Tianmen County,Hubei province)Kong Xianglan Wang Enzhu(Plant protection Station,Fongnan County,Hebei province)

摘要：

During 1984-1985,according to the same methods field trials were carriedout in Tianmen County of Hubei province and Fongnan County of Hebeiprovince,respectively. Results indicate that the index of the disease from 5.0 to 53.0 can cause7.60-38.53% yield losses.The relationship between cotton yield loss and theindex of Verticillium wilt was expressed by the following regression equation: Y=0.659+0.63x±7.92 r=0.8557 n=8 Where Y:percentage of lint yield loss x:the index of disease in the field Results also show that compensation effect of cotton is 23.5%,and 24.8%,respectively,in the two areas.The compensation effect was mainly affectedby increasing total number of cotton bolls. Based on the above results,it is recommened to control or improve thesoil moisture and fertility in August and September in order to increasecompensation effect and reduce yield loss of cotton in the diseased fields.

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棉花黄萎病产量损失及补偿作用研究

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