Fertilization for High Yields in Corn-Sweet Potato-Wheat Rotation: A Systematic Approach to Nutrient Limiting Factors of Soils in Chongqing, ChinaEnglish Full Text
HE TIANXIU, WU DEYI, HE CHENGHUI, TU SHIHUA, WU GUANGQUAN, WU WANGCHENG, KONG SHENG and WANG JIPENGSouthwest Agricultural University, Chongqing 400716 (China) Shanghai Jiaotong University, Shanghai 200000 (China)Institute of Soil and Fertilizer, Sichuan A
Abstract: 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.
- Series：
(D) Agriculture
- Subject：
Fundamental Science of Agriculture; Agronomy
- Classification Code：
S158
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