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Nutrient Cycling and Balance of P for Wheat Production in China

文献类型: 外文期刊

作者: Chuan, Limin 1 ; Zheng, Huaiguo 1 ; Tan, Cuiping 1 ; Sun, Sufen 1 ; Zhang, Junfeng 1 ;

作者机构: 1.Beijing Acad Agr & Forestry Sci, Inst Informat Sci & Technol Agr, Beijing 100097, Peoples R China

关键词: P;Nutrient cycling;Agricultural environment;Wheat

期刊名称:MATERIAL SCIENCE, CIVIL ENGINEERING AND ARCHITECTURE SCIENCE, MECHANICAL ENGINEERING AND MANUFACTURING TECHNOLOGY II

ISSN: 1660-9336

年卷期: 2014 年 651-653 卷

页码:

收录情况: SCI

摘要: 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.

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