三元节
三元节-
因此，IRR系统为发展大农业多种经营提供了重要的物质基础，改善了区域农业生产结构，促进了三元结构农业和节粮型畜牧业的发展。
As a basis of variety of agricultural production system , IRR system play an important role in improvement of structure of regional agricultural production and in construction of three-dimension ( food crop , economic crop and forage crop ) agriculture .