50多年来黑龙江省小麦产量变化的初步分析

根据黑龙江省1949，2004年的小麦产量资料，分析了黑龙江省小麦产量的变化。小麦单产年际间和年代间变幅很大，总的趋势是不断地提高；小麦播种面积和总产量的变化特征很相似，呈现抛物线型，说明小麦播种面积和总产量从小到大，又由大到小；小麦的总产和播种面积、单产相关显著；单产和面积的交互作用是影响小麦总产的主要因素。

Preliminary Analysis on the Change of Wheat Output In more than 50 years in Heilongjiang Province

According to the material of wheat output in Heilongjiang province from 1949 to 2004, the change of wheat output in Heilongjiang province was analyzed. The amplitude of wheat per unit area yield year border and the age is very big, the total tendency is enhances unceasingly. The wheat sown area and the total output change characteristic are very similar, present the parabola which explains the wheat sown area and the total output are from infancy to maturity, also from large to small. The relationship between wheat total output and sown area and per unit area yield are remarkable, the primary factor which effect the wheat total output are per unit area yield and the area correlation.