| 引用本文: | 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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| 摘要: |
| 【目的】针对吉林省西部半干旱区气候干旱、土壤贫瘠、水肥利用率低等问题，通过研究滴灌条件下不同水肥供应对玉米生长、干物质量、产量和产量构成及水肥利用率的影响，为制定合理的水肥调控措施来增产增效提供理论依据。【方法】在吉林省农业科学院乾安实验站研究基地，利用避雨大棚来开展膜下滴灌水肥联合调控试验，设置 3 个灌水水平，即 W1:350mm、W2: 500mm、W3:650mm; 4个施氮肥水平，即N0:0kg?hm-2、N1:120 kg?hm-2、N2: 240 kg?hm-2、N3: kg?hm-2。【结果】在一定范围内，水、氮耦合表现出明显的正交互作用，促进玉米的株高、叶面积、产量等。但盲目增施氮肥并不能获得最大粮食产量，在水分胁迫条件下，高氮量反而对玉米的生长发育有所抑制，导致了较低的水肥利用效率。W2N3处理产量最高，较其他处理高了3.7% ~ 49.7%。W2N3处理氮肥农学效率最高，比其他处理高0.82 ~ 10.28kg?kg-1。【结论】综合高产、高效和节水、节肥等因素，灌水量为500mm，施氮量240 kg?hm-2为最优灌溉施肥量。 |
| 关键词: 膜下滴灌，水氮调控，生长，产量，水肥利用效率 |
| DOI： |
| 分类号:S |
| 基金项目:国家重点研发计划子课题(2017YFD0300601-4),吉林省科技厅重大科技招标专项(20170203001NY) |
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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 |
