摘要
一、引言低丘红壤是重要的土壤资源,广泛分布于浙江金衙盆地和江西、福建等省的许多地区。几十年来,在红壤的开发利用上,取得了很大的成就,尤其是60年代的“旱改水”。
Low-hilly red soil regions are impo(?)tant grain production areas in Zhejiang province.Theyhave abundant climatic resources and great productive potentials,but compared with highproductive areas in the province,the conversion ratio of input energy and the photo-utilization efficiency of grain crops are significantly lower.These regions are characterized byhigher crganic fertilizers input,which accounts for 70% of the total energy input for grainproduction.Balances between nutrient elements become more important in the grain productionareas.
出处
《生态学杂志》
CAS
CSCD
北大核心
1990年第6期11-15,共5页
Chinese Journal of Ecology
关键词
低丘红壤
作物
光能利用
农田能流
photo-utilization efficiency
energy flow analysis
crop
red soil
