| 水稻二化螟和稻纵卷叶螟复合为害损失及防治指标的研究 |
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| 引用本文： | 钱士明,高财根,付关英.水稻二化螟和稻纵卷叶螟复合为害损失及防治指标的研究[J].中国植保导刊,2000,20(4):11-12. |
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| 作者姓名： | 钱士明 高财根 付关英 |
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| 作者单位： | 浙江省嘉兴市秀洲区植保站 314001 |
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| 摘 要： | 根据田间对比试验结果，嘉兴地区单季稻田二代二化螟和五(3)代稻纵卷叶螟混合发生时，其复合为害的产量损失率y=0.0159X1+0.2456X2-0.2227(式中X1为二化螟枯鞘团密度，X2为稻纵卷叶螟虫口密度)。按照当前水稻生产水平，计算得经济允许损失L=2.3464。由满足0.0159X1+0.2456X2-0.2227=2.3464，测得二化螟和稻纵卷叶螟混合为害的1组动态的复合防治指标。
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| 关 键 词： | 二化螟 稻纵卷叶螟 为害损失 复合防治指标 |
| 修稿时间： | 2000年5月30日 |
STUDY ON THE LOSS AND CONTROL INDEX OF COMPLEX DAMAGE WITH RICE STEM BORER AND LEAFROLLER |
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| Qian Shiming,Gao Caigen,Fu Guanying.STUDY ON THE LOSS AND CONTROL INDEX OF COMPLEX DAMAGE WITH RICE STEM BORER AND LEAFROLLER[J].China Plant Protection,2000,20(4):11-12. |
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| Authors: | Qian Shiming Gao Caigen Fu Guanying |
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| Abstract: | The results of the field test show that the loss rate of the complex damage with the 2nd generation of rice stem borer and the 5 th generation of rice leafroller is y=0.015?9x 1 0.245?6x 2-0.222?7 . In the formula, x 1 means the density of wilt sheath damaged by rice stem borer, x 2 means the density of rice leafroller. Based on present rice production level. The economical loss( L ) is 2.346?4. Based on 0.015?9x 1 0.245?6x 2-0.222?7=2.346?4, one set of developmental complex control index of the complex damage with rice stem borer and leafroller can be calculated. |
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| Keywords: | rice stem borer rice leafroller loss complex control index |
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