摘要
我国西北半干旱地区是我国农业中最不发达地区之一,其主要特征是封闭或半封闭式的有机农业传统,低投入、低功能、低产出。本文讨论了有争议的几种模式,提出了建立开放系统的原则与具体生产建议。
The northwest semi-arid negion is one of the most undeveloped zones in China. It is characterized by the closed or simi-closed traditional organic farming with very low input, inefficient function and low output.In this paper several controvcrtille models of agriculture are discussed and some priciples for establishing a open system and concrete suggestions for developing production are presented.
出处
《自然资源学报》
CSSCI
CSCD
1989年第1期12-18,共7页
Journal of Natural Resources
关键词
半干旱地区
农业
开放系统
closed system
open system semi-arid region
organic farming
model of rolling a snow ball
