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《Journal of Anhui Agricultural Sciences》 2008-31
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Path Analysis on the Effects of Spring Continuous Rain on the Yield of Summer Harvesting Crops

WU Hong-yan et al (Jiangsu Meteorological Observatory,Nanjing,Jiangsu 210008)  
Based on the meteorological data and the yield data of summer harvesting crops in Xuzhou City of Jiangsu Province from 1960 to 2006,the effects of the accumulative rainy days and accumulative rainfall of spring continuous rain and the occurrence times of continuous rain on the yield of summer crops were analyzed.The results showed that the accumulative rainy days,accumulative rainfall and the occurrence times of continuous rain all showed the negative correlations with the yield of summer crops.The accumulative rainy days mainly had direct effects on the relative meteorological yield of summer crops.The accumulative rainfall and the occurrence times of continuous rain had indirect effects on the relative meteorological yield of summer crops.Finally,through calculating the total determination coefficient,the influencing degree of spring continuous rain on the relative meteorological yield of summer crops reached 40.59%.
【Fund】: 国家科技支撑技划项目(2006BAB10A01 206BAJ10B03)
【CateGory Index】: S162.5
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