气象因子对冕宁县苦荞产量的影响研究

Study on the Effect of Meteorological Factors on the Yield of Tartary Buckwheat in Mianning County

为了解不同气象因子对苦荞影响的时期和强度,为苦荞高产种植提供气象依据,根据冕宁县2013-2014年苦荞分期播种产量和各个发育期的试验资料,同期的气象资料,运用方差分析法,相关性分析法、积分回归、主成分回归法对产量和气象因子进行分析。得出结论:试验中8月30日的播期为最适宜播种期,该期的各个气象指标可以用于苦荞种植的推广;开花-成熟期的平均相对湿度与产量的相关系数最高;影响苦荞产量的主要气候因子是温度和降水,其中最高平均气温在出苗-分枝期对产量具有最大的正效应,其次为平均气温在分枝-现蕾期对产量具有较大正效应。

The purpose is to understand the effects of meteorological factors on the period and intensity of buckwheat,and provide the meteorological basis for the high yield of Tartary buckwheat planting.Based on the test data of yield and various developmental stages,and the meteorological data over the same period from 2013 to 2014 in Mianning.Moreover,we have used variance analysis,correlation statistical analysis,integral regression and principal component regression method.The conclusion are as follows：August 30 of sowing date is the most suitable sowing period,and the various meteorological index can be for the promotion of tartary buckwheat seeding;the correlation coefficient of the meteorological yield and the average relative humidity in the flowering stage to maturity stage was the highest one;main climate factors affecting yield of tartary buckwheat are temperature and precipitation,and the highest average temperature has the greatest positive effect on yield in emergence stage to tillering stage,while the average temperature has the greater positive effect on the yield.