南水北调与水利科技Issue(1)：42-49,8.DOI:10.13476/j.cnki.nsbdqk.2016.01.007
施肥与灌溉对黑土区稻田氮素渗漏淋溶的影响
Influence of fertilization and irrigation on nitrogen percolation leaching in black soil region
摘要
Abstract
In order to clarif y the realities of nitrogen leakage in paddy soil in black soil area of Northeast China and to understand nitrogen migration pattern, a district experimental was developed in typical black dist rict based on farmland w ater balance, so as to control the nitrogen leakage and reduce groundw ater pollut ion threat. The three nitrogen concent ration changes in leakage water of paddy soil under different irrigation and nitrogen level conditions were analyzed, and the total amount of nitrogen leac-hing in different t reatment was calculated using the w ater balance equation. Results show ed that the concentrations of ammoni-um nitrogen, nitrate nit rogen and total nitrogen in the leaching w ater w ere positively correlated w ith nitrogen application a-mount. Control irrigation and wet-shallow irrigation can reduce 11. 89% and 14. 15% of nitrate leakage concent ration, respec-tively. Nitrogen leaching amount increased 0. 117 5 kg per hectare wit h each additional kilogram of nitrogen ( converted into pure nitrogen) w hen using normal irrigation, it w as respectively 0. 035 9 kg and 0. 055 7 kg for control irrigation and w et-shallow ir-rigation. The nit rogen leaching loss in w hole grow th period under control irrigation w as the least, average at 4. 51 kg/ hm2 , and it is respectively 1/ 3 and 1/ 2 of that under normal irrigation and w et-shallow irrigation. Wet-shallow irrigation w as more applica-ble, and the most reasonable theoretic fert ilizer amount is 137. 30 kg/ hm2 .关键词
黑土区/水稻田/氮素/渗漏淋溶/水肥管理Key words
black soil region/paddy field/nitrogen/leakage/farmland water balance/fertilizer/irrigation分类
农业科技引用本文复制引用
石敏,肖伟华,王春梅,郝彩莲..施肥与灌溉对黑土区稻田氮素渗漏淋溶的影响[J].南水北调与水利科技,2016,(1):42-49,8.基金项目
国家水体污染控制与治理科技重大专项(2012ZX07601001)Fund：Major Science and Technology Program for Water Pollution C ontr ol and Treatment of China(2012ZX07601001) （2012ZX07601001）
