中国稻米2026，Vol.32Issue(5)：42-47,6.DOI:10.3969/j.issn.1006-8082.2026.05.008
栽培方式与水分调控对水稻种植氮素流失与利用的影响
Effects of Cultivation Methods and Water Regulation on Nitrogen Loss and Use of Rice Planting
摘要
Abstract
To elucidate the effects of cultivation practices and water management strategies on nitrogen migration,transformation,and utilization efficiency in paddy fields,this study established three irrigation modes:continuous flooding(W1),intermittent irrigation(W2),and rainwater storage irrigation(W3).A comparative analysis was conducted between direct-seeded rice(F1)and transplanted rice(F2)regarding nitrogen dynamics in leachate,vertical distribution of soil total nitrogen(TN),and plant nitrogen accumulation characteristics within the 0-40 cm soil layer under different treatments.The results indicated that compared with continuous flooding(W1),both intermittent(W2)and rainwater storage(W3)irrigation significantly reduced the concentrations of total nitrogen(TN),nitrate-nitrogen(NO3--N),and ammonium-nitrogen(NH4+-N)in leachate at 0-40 cm depth.Notably,transplanted rice exhibited the greatest reductions in NO3--N concentration after basal fertilization,by 3.23 mg/L and 3.40 mg/L,respectively,with the difference widening further after topdressing.Throughout the growth period,the TN content in the 0-40 cm layer of transplanted rice(F2)was generally higher than that of direct-seeded rice(F1),and remained relatively stable at approximately 10.00 g/kg under W2 and W3 mode.Regarding nitrogen accumulation,transplanted rice demonstrated significantly superior translocation efficiency in stems,leaves,and panicles.Correspondingly,the nitrogen harvest index(NHI),apparent nitrogen recovery efficiency(ANRE),and agronomic nitrogen use efficiency(ANUE)of transplanted rice were significantly greater than those of direct-seeded rice.In conclusion,combining transplanted rice with intermittent irrigation can synergistically achieve nitrogen reduction in paddy fields and high nitrogen-use efficiency in plants.关键词
水稻/栽培方式/灌溉模式/氮素流失/氮肥利用Key words
rice/cultivation methods/irrigation modes/nitrogen loss/nitrogen fertilizer utilization分类
农业科技引用本文复制引用
陈燕祥,肖斌,何军,陈真雄,陈雷,周峻霄,何妍常悦,黄必善,熊威,王述斌..栽培方式与水分调控对水稻种植氮素流失与利用的影响[J].中国稻米,2026,32(5):42-47,6.基金项目
国家自然科学基金(42401030) （42401030）
湖北省水利重点科研项目(HBSLKY202331) （HBSLKY202331）
