Evaluation of fertigation technique for phosphorus application of maize in the semi-arid region of Northeast China

文献类型： 外文期刊

第一作者： Li, Qian

作者： Li, Qian;Zhao, Lanpo;Li, Qian;Yin, Caixia;Kong, Lili;Qin, Yubo;Hou, Yunpeng;Wang, Hongjun;Xu, Chen

作者机构：

关键词： phosphorus management; fertigation frequency; maize production; soil P balance; irrigated agriculture

期刊名称：PLANT SOIL AND ENVIRONMENT （ 影响因子：1.799； 五年影响因子：2.169 ）

ISSN： 1214-1178

年卷期： 2019 年 65 卷 8 期

页码：

收录情况： SCI

摘要： To determine the best phosphorus (P) fertilizer management strategy in chernozem soil in the semi-arid region of Northeast China, a field experiment under film mulched drip irrigation was conducted for two consecutive years. Five P application methods were tested, including no P fertilizer applied (P0); P fertilizer one-time basal application (P1); one fertigation one time (P2); fertigation twice (P3) and fertigation four times (P4). The shoot dry matter weight, phosphorus accumulation, yield and P-Olsen in soil were measured regularly during the maize growing season. The results demonstrated that P fertilizer application methods imposed significant effects on dry shoot matter, the apparent P loss, P fertilizer use efficiency and yield of maize (P < 0.05). The yield, P agrinomic efficiency and P recovery efficiency of P4 treatment were significantly higher than P1 treatment by 4.2, 39.7, and 66.4% across two year. In addition, P4 treatment significantly enhanced the shoot dry matter weight after V12 stage, post-silking P uptake and reduced the apparent P loss. In conclusion, P fertigation and a rational frequency (e.g., fertigation four times) enable to keep the maximum grain yield, the shoot dry matter, and recovery efficiency of P fertilizer (66.4%) though changing agronomic methods for efficient acquisition of P toward a sustainable and productive agricultural fertigation system.

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