河南省潮土区主要粮食生产潜力研究

摘要

为探讨河南省的粮食生产潜力,发掘限制粮食产量的限制因子,以通许和延津2个县的潮土区试验为例,在对试验区的光、温、水、土诸要素分析的基础上,计算出河南省潮土区粮食的光合生产潜力、光温生产潜力、气候生产潜力.结果表明,河南潮土区粮食生产潜力为15535～21927kg/hm2,粮食生产潜力指数在0.21～0.67.进一步分析出限制粮食产量的主要限制因子为水分,其次为温度和土壤,并提出了提高粮食产量的方法.%To search the potential of grain production and the limiting factors in crop production in Henan province,the photosynthetic production potential, the production potential of light and temperature, and the climate production potential were calculated based on the analysis of light,temperature,water and soil in alluvial soil areas of Tongxu country and Yanjin county. The results showed that the grain production potential in meadow soil was 15 535-21927 kg/ha,and the index of crop production potential was between 0. 21 and 0. 67. Analysis of the main limiting factors in crop production showed that the first one was water, and then was temperature and soil. At last the methods to further improve grain yield were proposed.