| 棉田中黑盲蝽的经济损害允许水平 |
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| 引用本文： | 刘立春,顾国华. 棉田中黑盲蝽的经济损害允许水平[J]. 南京农业大学学报, 1988, 0(4) |
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| 作者姓名： | 刘立春 顾国华 |
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| 作者单位： | 江苏沿江地区农科所(刘立春)，江苏沿江地区农科所(顾国华) |
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| 摘 要： | 分别采用田间自然危害,人工接虫和模拟危害的方法,就棉田二、三、四代中黑盲蝽(Adelphocoris suluralis Jak.)的危害损失和经济损害允许水平进行了研究。结果得出:①二代中黑盲蝽的危害,不至于造成棉花产量损失。②三代中黑盲蝽危害所造成的产量损失随虫口密度呈不对称S形增长,其损失率概率单位(P)与虫口密度(x)的数学模型为:P=5.72301gx-4.3561。最大损失量为10.43kg/亩。③四代中黑盲蝽的危害损失随虫口密度的增加而增加。④三、四代中黑盲蝽的经济损害允许水平分别为百株虫量27头和37头。
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| 关 键 词： | 中黑盲蝽 棉花 产量损失 经济损害允许水平 |
ECONOMIC INJURY LEVELS OF BLACK-STRIPED LEAF BUG TO COTTON YIELDS |
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| Liu Lichun and Gu Guohua. ECONOMIC INJURY LEVELS OF BLACK-STRIPED LEAF BUG TO COTTON YIELDS[J]. Journal of Nanjing Agricultural University, 1988, 0(4) |
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| Authors: | Liu Lichun and Gu Guohua |
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| Abstract: | Field experiments were conducted in Nantong during the growing season of cotton in 1985 and 1986 to determine the relationships between the population density of the second, the third and the fourth generation blackstriped leaf bug, Adelphocolis suturalis Jakovlev, and cotton yield. The experiments comparised the real damage and the artificially simulated for various levels of Adelphocoris damage to squares and boils. The results show that no significant effect was discovered on the yield loss for the second generation black-striped leaf bug, the economic injury levels were calculated to be 27 and 37 bugs per 100 plants for the third and the fourth generation. |
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| Keywords: | Adelphocoris suturalis Cotton Yield loss Economic injury level |
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