| 广元市主要农作物单产风险评估及区划 |
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| 引用本文： | 王勤,姚志国,刘会斌,甘建辉,刘运成.广元市主要农作物单产风险评估及区划[J].安徽农业科学,2011(13):7674-7675,7802. |
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| 作者姓名： | 王勤 姚志国 刘会斌 甘建辉 刘运成 |
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| 作者单位： | 四川省广元市气象局; |
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| 基金项目： | 川气课题(2009-13) |
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| 摘 要： | 对广元市7县（区）1954~2007年主要农作物单产进行分析,计算水稻、玉米单产风险指标和综合风险指数,并依据气象产量的减产率界定灾年,分析各县区不同灾害年型减产率和综合风险指数的地域分布规律,并以总体变异系数为依据,参考历年平均减产率和欠年减产率,采用逐步聚类法对不同作物进行风险分区,为调整种植结构、趋利避害等提供了参考。
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| 关 键 词： | 农作物单产 灾害 风险 区划 广元市 |
Risk Assessment on the Specific Yield of Main Crops of Guangyuan City and Their Regionalization |
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| WANG Qin et al.Risk Assessment on the Specific Yield of Main Crops of Guangyuan City and Their Regionalization[J].Journal of Anhui Agricultural Sciences,2011(13):7674-7675,7802. |
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| Authors: | WANG Qin |
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| Institution: | WANG Qin et al(Guangyuan Meteorological Bureau,Sichuan Province,Guangyuan,Sichuan 628017) |
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| Abstract: | The specific yields of main crops of 7 counties(districts) in Guangyuan City from 1954 to 2007 were analyzed and the risk indexes of specific yields and comprehensive risk indexes of rice and corn were calculated.The disaster year was defined according to the yield-reduced rate of meteorological yield,the regional distribution law of yield-reduced rates and comprehensive risk indexes of different types of disaster years of various counties and districts was analyzed.And then with coefficient of total variat... |
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| Keywords: | Specific yield of crops Disaster Risk Regionalization Guangyuan City |
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