黑土长期施肥及养分循环再利用的作物产量及土壤肥力质量变化Ⅲ.土壤养分收支

应用生态学报 ›› 2002, Vol. ›› Issue (11): 1410-1412.

黑土长期施肥及养分循环再利用的作物产量及土壤肥力质量变化Ⅲ.土壤养分收支

刘鸿翔¹, 王德禄¹, 王守宇¹, 孟凯¹, 韩晓增¹, 张璐², 沈善敏²

1. 中国科学院黑龙江农业现代化研究所, 哈尔滨150040;
2. 中国科学院沈阳应用生态研究所, 沈阳, 110016

收稿日期:2001-01-07 修回日期:2002-01-08 出版日期:2002-11-15
通讯作者: 沈善敏
基金资助:
国家重点基础研究发展规划项目(NKBRSF6199901184002);中国科学院“九五”重点基金项目(KZ952J1214)

LIU Hongxiang¹, WANG Delu¹, WANG Shouyu¹, MENG Kai¹, HAN Xiaozeng¹, ZHANG Lu and SHEN Shanmin ²

1. Heilongjiang Institute of Agricultural Modernization, Chinese Academy of Sciences, Harbin 150040;
2. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016

Received:2001-01-07 Revised:2002-01-08 Online:2002-11-15

摘要/Abstract

摘要： 计算了1985～1999年试验期间各模拟施肥模型的作物移出养分量和施肥输入养分量.结果表明,施用N肥可加剧土壤P收支赤字,而施用N、P肥则加剧土壤K收支赤字.实验展示了我国在20世纪70年代大面积贫P土壤和80年代大面积缺K土壤出现的原因.保持养分循环再利用可缓解土壤养分收支赤字,但不能满足丰产作物的养分需求.在保持养分循环利用基础上根据土壤肥力适当施用化肥,可满足丰产作物的养分需求和平衡土壤养分收支,不致发生大量过剩N进入环境.

关键词: 黑土, 长期施肥, 养分循环再利用, 土壤养分收支

Abstract: The nutrient budget of fertilization models under different treatments was calculated using data from a field experiment over the period of 1985～1999.The results indicated that application of nitrogen fertilizer accelerated a large deficit of soil phosphorus, and the use of nitrogen and phosphorus accelerated the deficit of potassium.The experimental data demonstrated the appearance of a large area of soil deficit of phosphorus from 1970s and of potassium from 1980s in China.Nutrient recycled in farming system improved soil nutrient budget, but could not meet the nutrient requirements from high-yield crops.The use of recycled nutrients with an appropriate use of fertilizers according to the soil fertility could produce higher crop yields, balance soil nutrient budget, and not cause surplus nutrients to emit into environment.

中图分类号:

S158

刘鸿翔, 王德禄, 王守宇, 孟凯, 韩晓增, 张璐, 沈善敏. 黑土长期施肥及养分循环再利用的作物产量及土壤肥力质量变化Ⅲ.土壤养分收支[J]. 应用生态学报, 2002, (11): 1410-1412.

LIU Hongxiang, WANG Delu, WANG Shouyu, MENG Kai, HAN Xiaozeng, ZHANG Lu and SHEN Shanmin . [J]. Chinese Journal of Applied Ecology, 2002, (11): 1410-1412.

参考文献

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