管渠自动控水灌溉施氮量对夏玉米产量、氮素吸收利用的影响

李英豪; 张政; 朱吉祥; 冯健; 吴可清; 冯哲; 刘香花; 王春堂

引用本文:	李英豪,张政,朱吉祥,等.管渠自动控水灌溉施氮量对夏玉米产量、氮素吸收利用的影响[J].灌溉排水学报,0,():-.
	Yinghao Li,Zheng Zhang,Jixiang Zhu,et al.管渠自动控水灌溉施氮量对夏玉米产量、氮素吸收利用的影响[J].灌溉排水学报,0,():-.

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管渠自动控水灌溉施氮量对夏玉米产量、氮素吸收利用的影响
李英豪,张政,朱吉祥,等
1.山东农业大学水利土木工程学院;2.青岛平度市水利勘察设计院;3.平度市水利水产局农水科

摘要:

【目的】寻找管渠自动控水灌溉夏玉米的最佳施氮量。【方法】本实验设置畦灌（B）和灌渠自动控水灌溉（W）两种灌水模式，畦灌设置农民传统施氮（300kg·hm-2，N1），管渠自动控水灌溉设置（农民传统施氮（300kg·hm-2，N1），减氮25%（225kg·hm-2，N2），减氮50%（150kg·hm-2，N3）和不施氮（N0））处理。【结果】施氮量为300kg·hm-2时，W灌水模式相较于B灌水模式籽粒产量和完熟期干物质积累量分别提高5.46%和3.23%， W灌水模式下N1、N2，N3施氮水平可以提高籽粒在成熟期干物质中的分配比例,氮素总积累量和氮肥利用率分别提高7.66%和26.69%。W灌水模式下，减氮25%处理籽粒产量、籽粒氮素积累量和植株氮素积累量与畦灌传统施氮处理无显著性差异，且氮素利用率显著提高25.54%，减氮50%处理氮肥偏生产力显著高于其他处理。【结论】在管渠自动控水灌溉情况下可以考虑适当减少氮肥的施用量。

关键词: 夏玉米；管渠自动控水灌溉；施氮量；氮肥利用效率

DOI：

分类号:s

基金项目:山东省自然科学基金项目(ZR2017MEE001)

Effects of Different NitrogenApplication Rates on Yield, Nitrogen Uptake and Utilization of Summer Maize under Automatic Pipe Channel-Control Irrigation

Yinghao Li¹, Zheng Zhang¹, Jixiang Zhu¹, Jian Feng¹, Keqing Wu¹, Zhe Feng², Xianghua Liu³, Chuntang Wang^4,5,6,7

1.College of Water Conservancy and Civil Engineering,Shandong agricultural university,Tai´an;2.Qingdao pingdu water conservancy survey and design institute,Qingdao;3.Pingdu water conservancy bureau agricultural water branch,Qingdao;4.College of Water Conservancy and Civil Engineering,Shandong agricultural university,Tai&5.amp;6.#180;7.an

Abstract:

【Objective】To find out the best nitrogen application quantity of summer maize irrigated by automatic pipe channel-control irrigation.【Methods】 In this experiment, two irrigation modes are set: border irrigation (B) and automatic pipe channel-control irrigation（W）. Conventional nitrogen application by farmers was arranged for border irrigation（300kg·hm-2，N1）. The following nitrogen application level is set for automatic water control irrigation of pipe canal(Farmers traditionally applied nitrogen（300kg·hm-2，N1）, Reduce nitrogen application by 25%（225kg·hm-2，N2）, Reduce nitrogen application by 50%（150kg·hm-2，N3）and No nitrogen fertilizer（N0））.【Result】When the nitrogen application was 300kg·hm-2, the grain yield and dry matter accumulation in the mature stage of the W irrigation model were increased by 5.46% and 3.23%, respectively, compared with that of the B irrigation model. Under W irrigation, N1, N2 and N3 nitrogen levels could increase the proportion of dry matter distribution in the mature stage. The total nitrogen accumulation and nitrogen use efficiencywere increased by 7.66% and 26.69%, respectively. Under W irrigation, there was no significant difference in grain yield, nitrogen accumulation in grain and plant between the treatment with reduce nitrogen application by 25% and the conventional nitrogen treatment for border irrigation, and the nitrogen use efficiency was significantly increased by 25.54%,. The? nitrogen partial factor productivity of treatment with reducing nitrogen application by 50% was significantly higher than that of other treatments.【Conclusion】The application of nitrogen fertilizer can be reduced under the condition of automatic pipe channel-control irrigation

Key words: Summer maize; Automatic pipe channel-control irrigation; Nitrogen application rate;Nitrogen utilization efficiency (NUE)