濮阳市夏玉米产量与气象因子的关系分析

采用线性拟合回归分析和相关分析等统计分析方法，对濮阳市1970～2009年共40年的夏玉米单产量，与同期气象因子的关系进行了综合分析。结果得出：夏玉米产量气象波动指数为0.139，占实际产量变异系数（0.3914）的35.51%，气象因子是影响夏玉米产量波动的主要因子；6月中旬和8月下旬的降水、8月下旬和9月上旬的气温、7月上旬和8月上旬的日照时数等是影响夏玉米产量波动的关键气象因子；6月上中旬播种期的干旱、7月上旬拔节期的卡脖旱、8月上旬开花授粉期的雨涝是夏玉米生育期中几个需要注意的气候现象。

An Relation Analysis of Summer Corn Output and Meteorological Factors Puyang

Grasped the impact of weather on corn yield,while avoiding disadvantages,to take reasonable control measure,to get high and stable yield of summer maize was the author aim of the study.On basis of linear regression and correlation analysis,the relationship between the yield per unit of summer corn and meteorological factor was comprehensive analyzed according to 40 years data from 1970 to 2009.The wave of summer corn output ware mainly influenced by the rainfall in the middle ten days of June and the last ten days of August,and the temperature in the last ten days of August and the first ten days of September,as well as the sun hours in the first ten days of July and August.Some phenomenon need to be paid attention to such as the drought in the sowing time in the first and middle ten days of June,and in the shooting period in the first ten days of July,as well as the waterlog in the pollination period of flowering in the first ten days of August.The results indicate：the meteorological wave index of summer corn was 0.139,which hold the 35.51% in the coefficient of variation（0.3914） on actual output,and weather factor ware the principal impact factor of summer corn output.