| Cite this article: | 孙云云,刘方明,高玉山,等.吉林西部膜下滴灌水氮调控对玉米生长及水肥利用的影响[J].灌溉排水学报,0,():-. |
| Sun Yun-yun,Liu Fang-ming,Gao Yu-shan,et al.吉林西部膜下滴灌水氮调控对玉米生长及水肥利用的影响[J].灌溉排水学报,0,():-. |
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| Effects of irrigation and nitrogen regulation on maize growth, water and fertilizer utilization of drip irrigation under film in western Jilin |
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Sun Yun-yun, Liu Fang-ming, Gao Yu-shan, Hou Zhong-hua, Dou Jing-gang, Liu Hui-tao
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Institute of agricultural resources and environment,Jilin academy of agricultural sciences,Jilin Changchun,130033
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| Abstract: |
| 【Objective】Aiming at the problem of arid climate, soil depletion, low water and fertilizer utilization in the semi-arid area of western Jilin province, the effects of different water and fertilizer supplies on the growth, dry matter accumulation, yield and yield composition of maize and the utilization rate of water and fertilizer of drip irrigation were studied, in order to provide theoretical basis for increase yield and increase efficiency by reasonable control regulation of water and fertilizer. 【Method】The experiment was carried out in the research base of Qian 'an experimental station of Jilin academy of agricultural sciences. We compared three irrigations: 350 mm, 500 mm and 650 mm, and four nitrogen fertilizer applications: 0 kg?hm-2, 120 kg?hm-2, 240 kg?hm-2, 360 kg?hm-2. 【Result】The results showed that, in a certain range, the combined control of water and nitrogen showed obvious positive interaction, which promoted the plant height, leaf area and yield of maize. Increasing the use of nitrogen fertilizer is not a reliable strategy for maximizing crop yields. Under water stress, high nitrogen content inhibited the growth and development of maize and reduced the utilization efficiency of water and fertilizer. The yield of W2N3 was the highest, 3.7 %~49.7 % higher than other treatments. W2N3 had the highest nitrogen fertilizer agronomic efficiency, 0.82-10.28 kg?kg-1 higher than other treatments. 【Conclusion】Considering the factors of high yield and high efficiency, the optimal irrigation amount was 500 mm, and the nitrogen application was 240 kg?hm-2. |
| Key words: drip;irrigation under;film, water;and nitrogen;regulation, growth, yield, water;and fertilizer;utilization efficiency |
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