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The Effect of Precision Variable Fertilization on Wheat Based on Prescription Map

文献类型： 外文期刊

作者： Guo Jianhua 1 ; Chen Liping 1 ; Wang Xiu 1 ; Chen Tianen 1 ; Ma Wei 1 ; Meng Zhijun 1 ; Fu Weiqiang 1 ;

作者机构： 1.Natl Engn Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China

关键词： Variable Fertilization; Prescription Map; Field Scale; Nitrogen

期刊名称：SENSOR LETTERS （ 影响因子：0.558； 五年影响因子：0.58 ）

ISSN： 1546-198X

年卷期： 2010 年 8 卷 1 期

页码：

收录情况： SCI

摘要： Precision fertilization is one of the important measure in precision agriculture. It carries out different fertilizer management according to the differences of soil nitrogen. The core of precision fertilization is to get the largest fertilizer efficiency. In this study, we carried out precision fertilization of wheat through the topdressing by intelligent spatial decision, which is based on the variability of soil fertility and spatial variability of production for many years to form prescription map which is to be set up in precision rate fertilizer applicator. The results showed that the yield coefficient of precision fertilization had a decrease of 1.08-1.23 percentage points and the precision fertilization which is decision-making based on spatial variability of soil fertility can save 9.82% of fertilizer than the farmer which uniform fertilization, it also can increase income by 227.35 Yuan per hectare. Variable fertilization can increase the content of chlorophyll during the green stage to the jointing stage, 2-3.79% for chlorophyll a; 2.3% for chlorophyll b.

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