| Cite this article: | 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,():-. |
|
| |
|
|
| This article has been：Browse 1743Times Download 0Times |
|
|
|
| DOI： |
|
| 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 Wang4,5,6,7
|
|
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) |
|
|
|
|
|
|
