Nutrient Cycling and Balance of P for Wheat Production in China

Abstract:

In this study, the input and output parameters of Phosphorus (P) for wheat production system were collected from the year 2000 to 2011 to evaluate the nutrient cycling and balances in North Central China, the Middle and Lower Reaches of the Yangtze River and Northwest China. The results showed that the P fertilizer application rates for each region were 44.5, 39.7 and 42.3 kg P/ha, the P brought from previous crop were 14.8, 1.6 and 2.6 kg/ha, and brought from seeding were 1.5, 1.0 and 0.9 kg/ha, respectively. The P input from atmospheric deposition and irrigation were considered zero. The P uptake by harvest in above-ground plant in North Central China, the Middle and Lower Reaches of the Yangtze River and Northwest China were 41.2, 53.2 and 17.0 kg/ha. As a result, the P balance in North Central China and Northwest China were both showing surplus by 19.6 and 28.8 kg/ha, and in the Middle and Lower Reaches of the Yangtze River showed deficiency. It is suggested that we need to adjust the P fertilizer input in China, in order to maintain the sustainable soil fertility and avoid the negative impact on the environment.

• Periodical: Applied Mechanics and Materials (Volumes 651-653)
• Pages: 260-264
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.651-653.260
• Online since: September 2014
• Authors: Li Min Chuan, Huai Guo Zheng*, Cui Ping Tan, Su Fen Sun, Jun Feng Zhang
• Keywords: Agricultural Environment, Nutrient Cycling, P, Wheat

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