| 刘根红,许强,康建宏,吴宏亮,赵亚慧.基于低污染的宁夏引黄灌区13种种植模式氮磷平衡分析[J].干旱地区农业研究,2012,30(2):1~7 |
| 基于低污染的宁夏引黄灌区13种种植模式氮磷平衡分析 |
| Analysis of equilibrium between nitrogen and phosphorus in thirteen planting patterns in the area irrigated with Yellow River water in Ningxia based on low pollution |
| |
| DOI：10.7606/j.issn.1000-7601.2012.02.01 |
| 中文关键词: 低污染 种植模式 氮 磷 |
| 英文关键词:low pollution nitrogen phosphorus planting pattern |
| 基金项目:国家水体污染控制与治理科技重大专项专题题“灌区低污染种植模式研究”(2009ZX07212-004-01) |
|
| 摘要点击次数: 237 |
| 全文下载次数: 147 |
| 中文摘要: |
| 针对宁夏引黄灌区农业生产中大量施用化肥对环境及农业退水污染严重的实际，本试验以宁夏引黄灌区现有小麦/玉米为对照，通过选择冬小麦复种水稻及组配麦后复种（蔬菜、青贮玉米、油葵等）等13种种植模式，研究不同模式在作物不同生长时期内土壤氮磷运移规律以及综合效益，选择利于农业清洁生产的种植模式。结果表明：相对于单作，间套作由于增加了田面作物的覆盖时间，对降低土壤氮磷残留量效果明显；以土壤氮磷为主要衡量指标，结合经济效益，筛选出了适合于该灌区大面积种植，经济效益较高的四种低污染模式为：冬小麦复种水稻、春小麦复种芹菜、冬小麦复种青贮、冬小麦复种油葵，四种模式中尤以冬小麦复种水稻效益最明显，土壤中氮流失总量比对照低56.2%,磷流失总量比对照低28.6%。 |
| 英文摘要: |
| In the face of the serious pollution caused by fertilizer application to environment and agricultural recession water, a test was conducted to explore soil nitrogen and phosphorus equilibrium regulation and economic valuation for thirteen planting patterns selected from traditional patterns such as planting rice after winter wheat harvest etc and assembled patterns such as cultivating vegetables and silage corn and oil sunflower and so on during
different crops growing seasons compared with spring wheat intercropped with corn for cleaning agricultural production. The outcome showed as follows: Intercropping patterns were beneficial to reducing soil nitrogen and phosphorus amounts on account of prolonging crops covering time during crops growing season, and four cropping patterns of planting rice after winter wheat harvest, planting celery after winter wheat harvest, planting silage after winter wheat harvest and plan
ting oil sunflower after winter wheat harvest were selected based on economic efficiency and less soil nitrogen and phosphorus amounts. The pattern of planting rice after winter wheat harvest was the optimum among four patterns because the amount of soil nitrogen loss was 56.2% less than the control and that of soil phosphorus was 28.6% less than the control after cultivation. |
| 查看全文 查看/发表评论 下载PDF阅读器 |