| Cite this article: | 陈海情,黄超,刘栩辰,等.灌水方式和施肥组合对冬小麦生长及肥料利用影响[J].灌溉排水学报,0,():-. |
| CHEN Haiqing,HUANG Chao,LIU Xuchen,et al.灌水方式和施肥组合对冬小麦生长及肥料利用影响[J].灌溉排水学报,0,():-. |
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| Effects of Irrigation Methods and Fertilization Combinations on Growth and Fertilizer Utilization of Winter Wheat |
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CHEN Haiqing1, HUANG Chao1, LIU Xuchen1, GONG Wenjun2, SUN Mengqiang2, ZHANG Yajuan2, wang xingpeng3, LIU Zhandong1
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1.Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences;2.Henan Jiaozuo Guangli Irrigation District Administration Bureau;3.College of Water Resource and Architecture Engineering, Tarim University
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| Abstract: |
| 【Objective】To investigate the effects of different fertilizer application combinations on winter wheat yield and fertilizer utilization under two irrigation methods of drip irrigation and border irrigation, and explore the optimal irrigation and fertilizer combinations for winter wheat. 【Methods】 This experiment was conducted at the Xinxiang Comprehensive Experimental Base of the Chinese Academy of Agricultural Sciences from 2020 to 2021, with two irrigation methods of drip irrigation (D) and border irrigation (Q) and four fertilization combinations of nitrogen and phosphorus (NP), nitrogen and potassium (NK), nitrogen and phosphorus and potassium (NPK) and phosphorus and potassium (PK), with a total of eight treatments (D-NP, D-NK, D-NPK, D PK, Q-NP, Q-NK, Q-NPK, Q-PK), and then analyzed the changes of growth and development, yield and fertilizer utilization of winter wheat under different irrigation and fertilizer combinations. 【Result】Under drip irrigation and border irrigation, the plant height and leaf area index of winter wheat in PK treatment were significantly lower than those of NPK treatment, and the spike length, spike grain number and thousand-grain weight of winter wheat were significantly lower. The grain per spike in border irrigation was higher than that in drip irrigation, while the thousand-grain weight in border irrigation was lower than that in drip irrigation. Under drip irrigation, the yield of PK treatment was 25.0% lower than that of NPK treatment, while the yield difference between NP treatments and NK treatments was not significant; the utilization rate of nitrogen, phosphorus and potassium fertilizer under drip irrigation was 49.5%, 4.0% and 18.1% higher than that of border irrigation, and the productivity of nitrogen, phosphorus and potassium bias under drip irrigation was significantly higher than that of border irrigation. Soil nitrate-N residuals at harvest in winter wheat under drip irrigation were lower than those in border irrigation, and soil nitrate-N residues in the Q-NK treatment were 18.7% lower than that of Q-NPK treatment. 【Conclusion】Comprehensive analysis shows that the combination of irrigation and fertilization with D-NK is beneficial to improve the fertilizer utilization of winter wheat and reduce the residual soil nitrate-N at harvest, so the use of phosphorus fertilizer can be appropriately reduced in the drip irrigation water integration fertilization of winter wheat in this area. |
| Key words: winter Wheat; drip irrigation; water-fertilizer integration; fertilizer use efficiency; nitrate-N residues |
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