Characteristics of C and N Accumulation in Infertile Red Soil Under Different Rotation Systems
Characteristics of C and N Accumulation in Infertile Red Soil Under Different Rotation Systems作者机构：Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 P.R.China
出 版 物：《Journal of Integrative Agriculture》 (农业科学学报(英文版))
年 卷 期：2002年第1卷第10期
页 面：62-69页
学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学]
基 金：the National Key Basic Research Support Foundation of China(G1999011801) 国家自然科学基金(39899370)
主 题：Different rotation systems Infertile red soil C and N accumulation
摘 要：A long-term experiment was conducted at the Ecological Experimental Station of Red Soil, Chinese Academy of Sciences to investigate the characteristics of material cycling and C, N accumulation in infertile red soil under different treatments of rotation systems for 11 years. Plant biomass, amount of organic materials returned to the soil, and budget of nitrogen in soil were obviously different under conventional cultivation, coverage by shrubs (Lespedeza formosa), rotation of shrubs (Lespedeza formosa) and crops (Peanut-Buckwheat) . Rotation of shrubs and crops with a combination of rational fertilization would be 75 - 100% of biomass and a similar amount of organic materials returned to the soil compared with that under coverage shrubs, more input than output of nitrogen, high system stability, and increasing crop productivity. With distinct cycling, different treatments of rotation systems influenced discriminatorily soil fertility. Soil organic carbon and nitrogen were respectively less than 7 and 0
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