| 二化螟为害水稻产量损失预测模型研究 |
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| 引用本文： | 陈斌,吴蔚文,蒋书楠,周浩东. 二化螟为害水稻产量损失预测模型研究[J]. 植物保护学报, 1993, 20(1): 1-6 |
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| 作者姓名： | 陈斌 吴蔚文 蒋书楠 周浩东 |
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| 作者单位： | 西南农业大学植物保护系 重庆(陈斌，吴蔚文，蒋书楠)，重庆巴县农业科学研究所 重庆(周浩东) |
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| 摘 要： | 1989年在重庆巴县白市驿设置了三种不同肥力水平180个一代二化螟自然为害及18个控制螟害的隔离小区,4月30日至6月29日每隔5天系统调查了苗数、枯鞘株数和枯心株数的发生情况,收获时考种,建立了不同生育期苗数、枯鞘、枯心数对产量损失的二次回归模型。详细讨论了苗数、枯鞘和枯心数的消长规律及对产量的影响。
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| 关 键 词： | 二化螟 水稻 产量损失 预测模型 |
ON THE PREDICTION MODEL OF RICE YIELD LOSS CAUSED BY RICE STEM BORER |
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| Chen Bin,Wu Weiwen,Chiang Shunan and Zhou Haodong. ON THE PREDICTION MODEL OF RICE YIELD LOSS CAUSED BY RICE STEM BORER[J]. Acta Phytophylacica Sinica, 1993, 20(1): 1-6 |
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| Authors: | Chen Bin Wu Weiwen Chiang Shunan Zhou Haodong |
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| Affiliation: | Southwest Agricultural University, Chongqing,Southwest Agricultural University, Chongqing,Southwest Agricultural University, Chongqing and Baxian Institute of Agricultural Sciences, Chongqing |
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| Abstract: | 198 separated plots,in which 180 were naturally damaged by ricestem borer Chilo suppressalis Walker and 18 were sprayed to keep out ofits damage,were arranged in an experiment conducted in Baxian Coun-ty,Chongqing City in 1989.Systematic investigations were carried outat intervals of five days since April 30 to June 29 on the number oftotal shoot,withered sheath shoot and withered heart shoot,and theyield constitutional factors were examined at harvest time.Quadratic re-gression models of rice yield loss relying on the three factors in differ-ent developmental stages were established.The dynamics of the threefactors and their effect on rice yield were discussed in detail. |
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| Keywords: | rice stem borer rice yield loss prediction model |
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