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土壤圈(英文版)
2002,12
(3)
Position: Home > Articles > Fertilization for High Yields in Corn-Sweet Potato-Wheat Rotation: A Systematic Approach to Nutrient Limiting Factors of Soils in Chongqing, China
Pedosphere
2002,12
(3)
Fertilization for High Yields in Corn-Sweet Potato-Wheat Rotation: A Systematic Approach to Nutrient Limiting Factors of Soils in Chongqing, China
作 者：
HE TIANXIU;WU DEYI;HE CHENGHUI;TU SHIHUA;WU GUANGQUAN;WU WANGCHENG;KONG SHENG;WANG JIPENG
单 位：
;Southwest Agricultural University, Chongqing 400716 China
关键词：
balanced fertilization;high yield;nutrient limiting factors;systematic approach
摘 要：
A systematic approach was adopted to investigate the nutrient limiting factors in gray-brown purple soils and yellow soils derived from limestone in Chongqing, China, to study balanced fertilization for corn, sweet potato and wheat in rotation. The results showed that N, P and K were deficient in both soils, Cu, Mn, S and Zn in the gray-brown purple soils and Ca, Mg, Mo and Zn for the yellow soils. Balanced fertilizer application increased yields of corn, sweet potato and wheat by 28.4%, 28.7% and 4.4%, respectively, as compared to the local farmers' practice. The systematic approach can be considered as one of the most efficient and reliable methods in fertility study.
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