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| 棉花枯萎病产量损失初步研究 | |
| 引用本文： | 马存,张弘.棉花枯萎病产量损失初步研究[J].植物病理学报,1986,16(4):245-251. |
| 作者姓名： | 马存 张弘 |
| 作者单位： | 1 中国农科院植保所;2 山东省聊城地区农科所 |
| 摘 要： | 枯萎病病株的级别(x)与单株皮棉产量损失百分率(y)之间的关系,可用下列回归式表示:y=-1.1+24.74x 枯萎病田间群体病指(x)与皮棉产量损失百分率(y)之间的关系,可用下列回归式表示:y=-5.3851+0.9062x 病株相邻的健株有明显的补偿作用,病级越高补偿越明显。 |
A PRELIMINARY STUDY ON COTTON YIELD LOSS CAUSED BY FUSARIUM WILT DISEASE |
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| Ma Cun,Zhang Hong.A PRELIMINARY STUDY ON COTTON YIELD LOSS CAUSED BY FUSARIUM WILT DISEASE[J].Acta Phytopathologica Sinica,1986,16(4):245-251. | |
| Authors: | Ma Cun Zhang Hong |
| Institution: | 1 Institute of Plant Protection, Chinese Academy of Agricultural Sciences;2 Institute of Agricultural Sciences of Liaocheng District, Shandong Province |
| Abstract: | During 1983-1984,a series of investigations concerned with yield Iosses Caused by Fusarium wilt disease on susceptible cotton cultivar Lumin No.1 had been carried out in Liaocheng District of Shandong Province. 1.The relationship between different scales (x) of diseased plants and yield losses(y) may be expressed as the following regression equation: Y=-1.1+24.74x 2.The relationship between infected index of plant populations in field-(x) and yield losses(y) may be expressed as auch a regression equation: Y=-5.7851+0.9062x 3.The compensation effect of healthy cotton plants in diseased field was obvious.The more serious degree of higher,infected plants appeared the higher prodcution was given by the healthy plants neighboring with diseased ones. |
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