| 施氮与灌水对夏玉米产量和水氮利用的影响 |
| |
| 引用本文： | 谢英荷,粟丽,洪坚平,王宏庭,张璐.施氮与灌水对夏玉米产量和水氮利用的影响[J].植物营养与肥料学报,2012,18(6):1354-1361. |
| |
| 作者姓名： | 谢英荷 粟丽 洪坚平 王宏庭 张璐 |
| |
| 作者单位： | 1.山西农业大学资源环境学院,山西太谷 030801; |
| |
| 摘 要： | 通过田间裂区试验，研究了不同灌水量（900、 1200和1500 m3/hm2）和施氮量（0、 150、 210和270 kg/hm2）对夏玉米生长状况、 产量构成及水、 氮利用效率等的影响。结果表明: 当灌水量超过最低量 900 m3/hm2、 施氮量超过150 kg/hm2时，二者对玉米产量、 产量构成因素（穗粒数、 百粒重及穗粒重）和收获指数（HI）以及各生育期干物质积累量等均没有明显影响; 氮肥农学效率和氮肥偏生产力随氮肥用量的增加呈明显降低趋势; 灌水生产效率和水分利用效率随灌水量的增加也显著降低，二者均表现为900 m3/hm21200 m3/hm21500 m3/hm2。因此，在本试验条件下，以W900N150处理的水、 氮利用效率、 产量及其构成因素等较高，并且对环境造成潜在危害最小，为当地地域气候条件下夏玉米生产中节水减氮的较为适宜的水氮配比。
|
| 关 键 词： | 夏玉米 施氮量 灌水量 产量 水、氮利用 |
| 收稿时间： | 2012-02-09 |
Effects of nitrogen application and irrigation on grain yield, water and nitrogen utilizations of summer maize |
| |
| XIE Ying-he LI Li HONG Jian-ping WANG Hong-ting ZHANG Lu.Effects of nitrogen application and irrigation on grain yield, water and nitrogen utilizations of summer maize[J].Plant Nutrition and Fertilizer Science,2012,18(6):1354-1361. |
| |
| Authors: | XIE Ying-he LI Li HONG Jian-ping WANG Hong-ting ZHANG Lu |
| |
| Institution: | 1.College of Resources and Environment,Shanxi Agricultural University,Taigu,Shanxi 030801,China; |
| |
| Abstract: | A field experiment using the split plot design was carried out to investigate the effects of nitrogen and irrigation on growth of summer maize, yield components, and water and nitrogen use efficiencies. There were three irrigation levels, 900 (W900), 1200 (W1200), and 1500 m3/ha (W1500) in main plots and four nitrogen levels, 0(N0), 150 (N150), 210 (N210), and 270 kg/ha (N270) in sub plots. The results show that the effects of nitrogen and irrigation on grain yield, yield components (grains per spike, 100-grain weight and grain weight per spike), harvest index (HI) and aboveground dry matter at each growth stage of summer maize are not significantly different when the irrigation rate is higher than 900 m3/ha and the nitrogen application rate is higher than 150 kg/ha. The nitrogen agronomic efficiency (NAE) and partial factor productivity of the applied N (NPFP) are decreased with the increase of the nitrogen application, and the water productivity (WF) and water use efficiency (WUE) are also decreased significantly with the increase of the irrigation rate (900 m3/ha>1200 m3/ha>1500 m3/ha). In the present experiment, the optimal combination of nitrogen rate and irrigation rate is W900N150 for the higher grain yield, yield components and water use efficiency, which has lower potential harm for environment. |
| |
| Keywords: | summer maize nitrogen application rate irrigation rate grain yield utilization of water and nitrogen |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《植物营养与肥料学报》浏览原始摘要信息 |
| 点击此处可从《植物营养与肥料学报》下载免费的PDF全文 |
|
