冬小麦生产力估算方法研究

本文在综述前人工作的基础上,对作物生产力的概念重新进行了阐述,提出作物生产力包括多层次的含义、各层次生产力代表不同的生产水平且限制因子不同,并对各层次生产力进行了定义。从大气-作物-土壤系统出发,探讨了冬小麦的生长发育及产量形成与各环境因子、能量投入之间的定量关系,采用动态模拟和统计分析相结合的方法,利用dBASEⅢ和BASIC语言,建立起了冬小麦生长发育及生产力形成的动态模拟软件,该软件可以根据不同需要对不同地区的冬小麦干物质累积、叶面积变化及土壤水分平衡进行计算,并可计算各层次的生产力。

A STUDY ON THE ESTIMATION METHOD OF THE PRODU CTIVITY OF THE WINTER WHEAT

In this paper, on the basis of summing up the works of previous researchers, we re-clarify the concept of crop productivity, put forth that the productivity contains many levels and that each level represents different productivity and has different limiting factors, and give a de-fination to each level. Proceeding from the atmosphere-crop-soil system, we probe into the relation between the growth, development and yield of the winter wheat on one hand and the environmental factors and the energy input on the other. Adopting the method which combines the dynamic simulation with the statistic analysis and making use of the d BASE-Ⅲ and BASIC languages, we set up the dynamic simulation software of the growth, development and productivity formation. of the winter wheat. The software can calculate the dry matter accumulation and the leaf index of the winter wheat and the soil moisture balance in different regions according to different needs. It can also calculate the productivity of each level.