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Experimental validation of a new approach for rice fertiliser recommendations across smallholder farms in China

文献类型： 外文期刊

作者： Yang, Fuqiang 1 ; Xu, Xinpeng 1 ; Ma, Jinchuan 1 ; He, Ping 1 ; Pampolino, Mirasol F. 4 ; Zhou, Wei 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Plant Nutr & Fertiliser, Minist Agr, Beijing 100081, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Inst Plant Nutrient & Resources, Beijing 100097, Peoples R China

3.CAAS IPNI Joint Lab Plant Nutr Innovat Res, Int Plant Nutr Inst IPNI China Program, Beijing 100081, Peoples R China

4.Int Plant Nutr Inst IPNI Southeast Asia Program, POB 500 GPO, George Town 10670, Malaysia

关键词： fertiliser use efficiency;nutrient expert;soil test;yield

期刊名称：SOIL RESEARCH （ 影响因子：1.987； 五年影响因子：2.47 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Inappropriate fertiliser applications have caused a series of environmental problems and threaten the sustainable production of rice in China. The aim of this study was to evaluate the effects of a new approach, Nutrient Expert (NE), a nutrient decision support tool for rice (Oryza sativa L.). Experimental validation was carried out under field conditions from 2013 to 2015 at 211 sites in the main rice-growing regions of China. The results showed that, compared with current farmers' fertiliser practices (FP) and soil testing (ST), the NE approach balanced nutrient application - decreased the nitrogen (N) and potassium (K) rates, and increased the phosphorus (P) rate - and improved grain yield, nutrient uptake, and fertiliser use efficiency. The NE treatment produced a 3.5-6.3% higher grain yield, 2.3-14.2% higher N, P, and K uptake in aboveground plant dry matter, and higher agronomic efficiency, apparent recovery efficiency (RE), and partial factor productivity of applied N and K, but not for P. In particular, the RE of the NE approach was greater by 12.2 and 8.4 percentage points for N, 3.7 and 2.9 percentage points for P, and 16.3 and 6.4 percentage points for K, compared with FP and ST respectively. The results obtained from field validation suggested that the NE approach could predict target yields; nutrient uptake of N, P, and K within specific ranges; and could be used as a tool to make fertiliser recommendation for rice in China.

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