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| DOI：10.13522/j.cnki.ggps.2019074 |
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| Water and Nitrogen Utilization and Biological Effects of Winter Wheat under Different Water and Fertilizer Measures |
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ZHOU Jiasen, MA Yang, WU Min, PENG Zhengping, WANG Yaling, LI Hongchi,WANG Yanqun, SHENG Lili
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1. Hebei Agricultural University, Baoding 071000, China; 2. Ningjin County Agricultural Bureau, Ningjin 055550, China
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| Abstract: |
| 【Objective】The purpose of this paper is to search for an appropriate water and fertilizer scheme for winter wheat.【Method】Field experiments were conducted to study the dry matter accumulation, yield, water and nitrogen utilization of wheat and soil water storage under different nitrogen treatments with conventional furrow irrigation and integrated micro-sprinkler irrigation. 【Result】 Compared with traditional furrow irrigation, the irrigation amount of each treatment of micro-sprinkler irrigation was reduced by 50%. The dry matter accumulation, yield, nitrogen fertilizer production efficiency and water use efficiency were increased by 28.2%~41.1%, 0.2%~27.3%, 0.8%~76.6% and 23.3%~61.7%, respectively. For traditional irrigation, compared with no nitrogen fertilization, conventional nitrogen fertilization and recommended nitrogen fertilization with 20% nitrogen reduction, dry matter accumulation, yield, nitrogen fertilizer production efficiency and water use efficiency in the recommended nitrogen fertilization treatment were increased by 4.0%~11.4%, 1.8%~26.9%, 32.1%~75.3%, 0.8%~28.2%, respectively. Compared with the recommended nitrogen fertilizer, dry matter accumulation, yield, nitrogen fertilizer production efficiency and water use efficiency in the recommended nitrogen fertilizer reducing nitrogen by 20% were improved by 6.4%, 4.5%, 0.8% and 2.3%, respectively. 【Conclusion】Based on the comprehensive comparison, the optimal treatment was suggested to reduce nitrogen by 20% under the micro-sprinkler irrigation with integrated water and fertilizer. It is suggested that micro-sprinkling irrigation combined with rational nitrogen fertilizer use can improve the water and nitrogen utilization efficiency of winter wheat and stabilize its yield. |
| Key words: winter wheat; water and fertilizer measures; soil water storage; water efficiency; nitrogen fertilizer efficiency |
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