摘要
分析宁夏南部山区农田生态系统的光能利用率、营养物质循环及能投效率等生产力因子的特点,研究了农田投入与产出、粮食产量的关系,认为农田投入低是制约农业发展的主要因子,并提出了提高农田生产力、促进农业发展的措施。
This pater analyses the productivity factors including the light energyuse efficiency,nutrient circulation and energy input efficiency in farmland ecosystem inthe mountain areas of the south part of Ningxia,and also studies the farmland input andout put and relation of grain yields. It holds that low input in farmland is the major con-straint in agricultural development and suggests the corresponding measures to improvefarmland productivity and stimulate agricultural development.
出处
《干旱地区农业研究》
CSCD
北大核心
1993年第4期65-69,共5页
Agricultural Research in the Arid Areas
关键词
生产力
投入
农业发展
farmland productivity
farmland input
agricultural development
farmland ecosystem
