|
|||||
|
|
| 灌溉与施氮对黑河中游新垦沙地春小麦生长特性、耗水量及产量的影响 | |
| 引用本文： | 王琦,孙永胜,王田涛,范国艳,张恩和,李锋瑞,魏万玲. 灌溉与施氮对黑河中游新垦沙地春小麦生长特性、耗水量及产量的影响[J]. 干旱区地理, 2009, 32(2) |
| 作者姓名： | 王琦 孙永胜 王田涛 范国艳 张恩和 李锋瑞 魏万玲 |
| 作者单位： | 1. 甘肃农业大学草业学院,甘肃,兰州,730070;中国科学院寒区旱区环境与工程研究所临泽内陆河流域研究站,甘肃,兰州,730000 2. 甘肃省水土保持科研研究所,甘肃,兰州,130030 3. 甘肃农业大学草业学院,甘肃,兰州,730070 4. 甘肃农业大学农学院,甘肃,兰州,730070 5. 中国科学院寒区旱区环境与工程研究所临泽内陆河流域研究站,甘肃,兰州,730000 6. 兰州市臬兰县水利勘测设计队,甘肃,兰州,730200 |
| 基金项目： | 中国科学院国家外国专家局创新团队国际合作伙伴计划，国家科技支撑计划 |
| 摘 要： | 在黑河中游边缘绿洲新垦沙地设计大田试验,研究了不同灌溉量(估算春小麦生育期需水量的0.6、0.8、1.0倍)与施氮量(0、140、221和300 kg/hm2)对春小麦生长特性、耗水量及产量的影响.结果表明,灌溉与施氮对春小麦植株高度产生一定的影响,但其效果不明显.高灌溉量加大作物的耗水量,春小麦全生育期,高灌溉处理的耗水量比中等灌溉处理与低灌溉处理分别增加16.68%与36.88%.当施氮量小于221 kg/hm2时,增加施氮量可以提高地上部干物质量、单位面积粒数、单穗粒重与产量,从而提高水分利用效率(WUE);当施氮量大于221 kg/hm2时,高施氮量使大量干物质滞留于营养器官,导致成熟前物质的转移不充分,同时在土壤水分亏缺的条件下,高施氮处理加重干旱胁迫,从而使221 kg/hm2处理的地上部干物质量(4 159 kg/hm2)、单位面积粒数(3 774)、单穗粒重(259.42 mg)、产量(2 132.83 kg/hm2)与WUE(3.85 kg·mm-1·hm-2)在各施氮处理中最高.地上部干物质量、籽粒产量及产量构成要素随灌溉量的增加而增加.低灌溉处理的WUE显著高于中等灌溉处理与高灌溉处理处理,中等灌溉处理与高灌溉处理之间的WUE差异不显著.结果表明,低灌溉处理(春小麦全生育期灌溉量378 mm)与221 kg/hm2施氮是黑河中游边缘绿洲新垦沙地农田可以获得相对较高的经济产量与高WUE的最佳组合. |
| 关 键 词： | 灌溉施氮 生长特性 耗水量 产量 新垦沙地农田 |
Effect of different irrigation and N supply levels on spring wheat growth characteristics,water consumption and grain yield on recently reclaimed sandy farmlands in Heihe River basin |
|
| WANG Qi,SUN Yong-sheng,WANG Tian-tao,FAN Guo-yan,ZHANG En-he,LI Feng-rui,WEI Wan-ling. Effect of different irrigation and N supply levels on spring wheat growth characteristics,water consumption and grain yield on recently reclaimed sandy farmlands in Heihe River basin[J]. Arid Land Geography, 2009, 32(2) | |
| Authors: | WANG Qi SUN Yong-sheng WANG Tian-tao FAN Guo-yan ZHANG En-he LI Feng-rui WEI Wan-ling |
| Affiliation: | WANG Qi~(1,2),SUN Yong-sheng~3,WANG Tian-tao~1,FAN Guo-yan~1,ZHANG En-he~4,LI Feng-mi~2,WEI Wan-ling~5 (1 Pratacultral College,Gansu Agricultural University,Lanzhou 730070,Gansu,China,2 Linze Inland River Basin Research Station,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,3 Gansu Water and Soil conservation Science Research Institute,Lanzhou 730030,4 Agronomy College,Lanzhou 130010,Gan... |
| Abstract: | Excessive nitrogen(N) and high irrigation in local agricultural systems are raising concern owing to water quality and water quantity in the middle reache of the Heihe River basin.Consequently,a controlled study of irrigation and N was conducted in this region(Linze Inland River Basin Research Station,CERN) to investigate the effects of different irrigation and N supply levels on spring wheat growth characteristics,water consumption and grain yield on recently reclaimed sandy farmlands with an accurate mana... |
| Keywords: | Irrigation nitrogen growth characteristics water consumption grain yield recently reclaimed sandy farmlands |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |