| 不同灌排调控模式下水肥流失规律 |
| |
| 引用本文： | 邵东国,乔欣,刘欢欢,柴明正,王建漳.不同灌排调控模式下水肥流失规律[J].武汉大学学报(工学版),2010,43(4). |
| |
| 作者姓名： | 邵东国 乔欣 刘欢欢 柴明正 王建漳 |
| |
| 作者单位： | 1. 武汉大学水资源与水电工程科学国家重点实验室,湖北武汉,430072
2. 湖北省灌溉试验中心站,湖北荆门,448156 |
| |
| 基金项目： | 教育部科学技术研究重大项目，国家高技术研究发展计划(863计划)，"十一五"国家科技支撑计划，国家自然科学基金 |
| |
| 摘 要： | 针对我国灌排面积不断增加、水资源利用效率不高、化肥流失严重等问题,结合田间对比试验,考虑节水灌溉与控制排水的协同效应,通过控制变量法研究灌排因素对农田排水量和作物产量的影响以及不同模式下土壤水中氮磷的迁移转化规律,发现控制排水-浅灌深蓄(G_1L_1)灌排组合下的排水量分别比控制排水-浅勤灌溉(G_1L_2)、自然排水-浅灌深蓄(G_2L_1)、自然排水-浅勤灌溉(G_2L_2)灌排组合下的排水量减少5.76%、2.80%、12.70%,G_1L_1的灌排组合更有利于控制田间排水量;G_1L_1模式下的作物产量分别比G_1L_2、G_2L_1、G_2L_2模式下的产量高7.59%、44.2%、48.91%,G_1L_1的调控模式更有利于提高作物产量.由此可知,G_1L_1的灌排调控模式为优选模式,其合理地调控了土壤水分,高效地利用了水分和养分,促使了水稻植株合理生长,实现了节水高产.
|
| 关 键 词： | 水稻灌区 灌排协同效应 排水量 氮磷流失量 迁移转化规律 |
Study of moving and transforming law of water and fertilizer under different treatments of irrigation and drainage |
| |
| SHAO Dongguo,QIAO Xin,LIU Huanhuan,CHAI Mingzheng,WANG Jianzhang.Study of moving and transforming law of water and fertilizer under different treatments of irrigation and drainage[J].Engineering Journal of Wuhan University,2010,43(4). |
| |
| Authors: | SHAO Dongguo QIAO Xin LIU Huanhuan CHAI Mingzheng WANG Jianzhang |
| |
| Affiliation: | SHAO Dongguo1,QIAO Xin1,LIU Huanhuan1,CHAI Mingzheng1,WANG Jianzhang2(1.State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China,2.Hubei Irrigation Experiment Center,Jingmen 448156,China) |
| |
| Abstract: | A series of field contrast experiments were conducted in southern rice area because irrigation and drainage area increases constantly,water efficiency is not high,fertilizer losses are so severe that downstream rivers and lakes are contaminated.Based on these experiments,this paper investigates the drainage situation,crop production,and the moving and transforming law of nitrogen(N)and phosphorus(P)under different treatments of irrigation and drainage,which considers the synergistic effects of water-saving ... |
| |
| Keywords: | rice irrigated area synergistic effects of irrigation and drainage discharge excretion of nitrogen and phosphorus moving and transforming law |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
