豫南一季中稻生育期气象因子与产量及其构成要素相关性分析

Correlation Analysis of Paddy Rice Growth Meteorological Factor,Yield and Element in Southern Henan

以信阳国家一级农业气象试验站1981—2009年29 a气象资料以及水稻观测资料为基础,利用SPSS统计分析软件,建立豫南一季中稻生育期旬平均气温、最低气温、降水量以及日照时数与空壳率、秕谷率、千粒重以及地段1 m2产量之间的统计回归关系。结果表明:1)一季中稻的空壳率随着6月中旬和8月中旬的日照时数的减少而增大,随着8月下旬降水量的增多而增大。2)秕谷率随着8月中旬降水量的增多而减小,随着8月下旬降水量的增多而增大,随着8月下旬最低气温的降低而增大。3)千粒重随着乳熟期降水量的减少而增加,随着日照时数的增加而增加。4)地段1 m2产量随着7月中旬降水量的减少而增加,随着9月上旬平均气温和日照时数的增加而增加。

Based on the 29 years of weather data during 1981-2009 and paddy rice observational data of Xinyang national first level of agro-meteorological station, using SPSS statistical analysis software, we established statistical regression relationship between meteorological factor such as ten-days average temperature, minimum temperature, precipitation and sunshine hours and the shell rate, unfilled grain rate, 1000-grain weight and 1 m2 yield. The results are as follows. 1 ） The paddy rice shell rates in a season increase with sunshine hours reduction in mid-June and mid-August, and increase with precipitation increase in late August. 2） The unfilled grain rate decrease with precipitation increase in mid-August, and increase with precipitation increase in late August, and increase with minimum temperature decrease in late August. 3） The 1000-grain weight increase with precipitation reduction in milky stage, and increase with sunshine hours increase. 4） The 1 m2 yield increase with precipitation reduction in mid-July, and increase with average temperature in early September and sunshine hours increase.