| 小地老虎为害棉苗缺株产量损失及棉株群体补偿力模拟试验 |
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| 引用本文： | 祝长清,曹宗亮,白春社,乔秀荣,王淑华,顾汉杰.小地老虎为害棉苗缺株产量损失及棉株群体补偿力模拟试验[J].植物保护学报,1993,20(4):325-330. |
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| 作者姓名： | 祝长清 曹宗亮 白春社 乔秀荣 王淑华 顾汉杰 |
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| 作者单位： | 河南农业大学植物保护系 郑州(祝长清，曹宗亮)，河南省西华县植保站 西华(白春社，乔秀荣)，河南省南阳县棉花办公室 南阳(王淑华，顾汉杰) |
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| 摘 要： | 研究结果明确了模拟棉苗受小地老虎为害造成断苗缺株后，周围棉株有不同程度的补偿作用，主要表现在有效铃的增加和产量的提高，缺１株苗成铃能获得１０１．８５％的补偿，籽棉平均补偿率达８７．２４％，损失率为１２．７６％。但自连续缺２株以上，则补偿率下降为５０．６２％－３５．７５％，损失率上升为４９．３７％－６４．２４％。补偿量和损失量（率）是随缺株数的增加而增长，而补偿率则随缺株数增加而下降，在不同缺株数间
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| 关 键 词： | 小地老虎 产量损失 棉花 危害 |
SIMULATION EXPERIMENTS ON THE COMPENSATION OF COTTON POPULATION TO THE DECREASE OF PLANT NUMBER CAUSED BY BLACK CUTWORM |
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| Zhu Changqing,Cao Zhongliang,Bai Chunshe,Qiao Xiurong,Wang Shuhua and Gu Hanjie.SIMULATION EXPERIMENTS ON THE COMPENSATION OF COTTON POPULATION TO THE DECREASE OF PLANT NUMBER CAUSED BY BLACK CUTWORM[J].Acta Phytophylacica Sinica,1993,20(4):325-330. |
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| Authors: | Zhu Changqing Cao Zhongliang Bai Chunshe Qiao Xiurong Wang Shuhua and Gu Hanjie |
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| Institution: | Henan Agricultural University, Zhengzhou,Henan Agricultural University, Zhengzhou,Plant Protection Station of Xihua County,Plant Protection Station of Xihua County,Cotton Office of Nanyang County and Cotton Office of Nanyang County |
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| Abstract: | Experiments on the compensation of cotton population were con-ducted by removing 0,1,2,4,6,8 cotton seedlings/30m~2 plot tosimulate the damage of black cutworm Agrotis ypsilen(Rottemberg).The results showed that there was significant compensation,epitomizedat the increase of effective boll number and cotton yield,of the cottonplants near around the lost plant(s).The compensation rate of ma-ture boll and unginned cotton and yield loss rate in one lost plant plotwere 101.85%,87.24% and 12.76% respectively.As the successive lostplant number increased,the compensation amount and yield loss rateincreased but the compensation rate decreased.The differences of thesedata among different lost plant number treatments were obvious orhighly obvious. |
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| Keywords: | black cutworm cotton simulated damage compensation |
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