用最优分割法评价棉花产量的初步研究

Using the method of optimum cut to evaluate the yield of cotton

本文采用最优二分割、三分割方法定量的评价了辽宁省黑山县棉花产量与积温、降水量、日照时数的关系,得出积温>3457℃为丰年,3284℃～3457℃为平年,<3284℃为歉年,降水≥427mm为歉年,<427mm为丰年。年日照时数>1521.90小时为丰年,<1521.9小时为歉年。

In this treatise, the relationship between the cotton yield and the accumulated temperature, precipitation and sunlight duration in Heishan County was analysed with the method of bi-and tri-optimum cut. The results came to be that: when the accumulated temperature is>3457℃, there will be a bumper year;=3284～3457℃, a common year; <3264℃,a lean year; when the oprecipitation is≥427mm,there will be a lean year;while<427mm, a bumper year.