| 张礼生;郑根昌.稻水蝇危害水稻产量损失研究[J].植物保护,2002,28(1):15-18. |
| 稻水蝇危害水稻产量损失研究 |
| Studies on rice yield loss caused by Ephydra macellaria Egger |
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| DOI： |
| 中文关键词: 稻水蝇 危害 通径分析 产量损失 |
| 英文关键词:Ephydra macellaria Egger damage path analysis yield loss |
| 基金项目: |
| 张礼生;郑根昌 |
| 内蒙古民族大学农学院 通辽028042 |
| 摘要点击次数: 699 |
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| 中文摘要: |
| 采用相关分析和通径分析法研究了稻水蝇危害与水稻产量损失的关系。结果表明:水稻产量(y,kg/hm2)与田间虫口密度(x,头 /m2)、穗损失率 (x5,% )间0.01水平显著时的关系符合方程:y^=9433.965-6.6637x1-402.7469x5;产量损失(Y,kg/hm2)与田间虫口密度(x,头/m2)间关系符合下列方程 :Y^=-13.4989+6.0043x(r=0.9647**)。通径分析显示 ,穗损失率和虫口密度对产量建成直接效应最大 ,分别为-0.9218和-0.1422 |
| 英文摘要: |
| Rice yield loss caused by Ephydra macellaria Egger in rice fields was studied through correlation test and path analysis. The results were as followed: When α=0.01, the relationship between rice yield (y) and pest density (x1) and fringe loss rate (x5) was in compliance with equation: y^=9433.965-6.6637x1-402.7469x5. The relationship between rice yield loss (Y) and larva density (x) yiel complied with equation: Y^=-13.4989+6.0043x(r=0.9647**). Path analysis showed that the effects of fringe loss rate and pest density on rice yield was most significent, and the effect numerical values were -0.921 8 and -0.144 2 respectively. |
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