辽西褐土施肥及养分循环再利用中长期试验 Ⅱ.土壤养分收支  

A long-term field trial on fertilization and on use of recycled nutrients in farming systems：Ⅱ. Soil nutrient budget

作　　者：张璐[1] 沈善敏[1] 宇万太[1] 

机构地区：[1]中国科学院沈阳生态试验站,沈阳辽宁110015

出　　处：《土壤与环境》2001年第1期51-54,共4页Soil and Environmental Sciences

基　　金：中国科学院"九五"重点项目!(KZ952-J-214)

摘　　要：持续10 a的田间试验结果表明，在保持农业系统养分循环再利用的基础上，根据土壤养分供给力设计化肥施用量，可以在实现作物高产的同时，平衡土壤养分收支，从而避免土壤中肥料养分（主要是氮）过剩而进入环境。：Results of a ten year's field experiment indicated that the use of nutrients recycled in the farming systems with appropriate amount of fertilizer applied according to the soil nutrient supplying ability could not only produce high crop yield but also balance the soil nutrient budget so that there were no significant surplus of nutrients (mainly inorganic nitrogen) which may emit or leach out of soil into environment.

关 键 词：施肥 长期田间试验 土壤养分收支 养分循环再利用 褐土 

分 类 号：S158.3[农业科学—土壤学]