基于BaPS系统的南疆膜下滴灌土壤硝化-反硝化  

Nitrification-denitrification of soil under plastic film mulched drip irrigation in south Xinjiang based on BaPS system

作　　者：张翠丽[1] 卜东升[2] 迟春明[1] 郑德明[1] 

机构地区：[1]塔里木大学植物科学学院,新疆阿拉尔843300 [2]新疆生产建设兵团第一师农业科学研究所,新疆阿拉尔843300

出　　处：《江苏农业学报》2015年第3期574-578,共5页Jiangsu Journal of Agricultural Sciences

基　　金：国家自然科学基金项目(41161037;31371582);新疆维吾尔自治区高校科研重点项目(XJEDU2007142)

摘　　要：为了解膜下滴灌土壤硝化、反硝化作用的变化规律,应用气压过程分离(Barometric process separation,BaPS)方法,研究了施氮肥、有机肥与氮肥配施和不施肥3种不同施肥处理的土壤硝化、反硝化速率在覆膜与裸地条件下的动态变化。结果显示,不同处理下土壤硝化、反硝化作用随着玉米生育期的推移有明显的变化。相同栽培措施不同施肥处理间土壤硝化、反硝化速率差异均达极显著水平,且大小顺序为氮+有机肥配施处理>施氮肥处理>不施肥处理(对照);相同施肥处理不同栽培措施间土壤硝化、反硝化速率大小顺序均为覆膜处理>裸地处理。To study soil nitrification and denitrification under plastic film drip irrigation, the barometric process sepa-ration （ BaPS） method was introduced to measure dynamic change of gross nitrification and denitrification rates in three differ-ent fertilization treatments, nitrogen（ N） application, organic fertilizer combining nitrogen（ N＋OF） application and no fertili-zation（ CK） with or without muching. The results showed that soil nitrification-denitrification changed greatly over maize growth periods. Nitrification rate and denitrification rate differed in three fertilization treatments with or without mulching. The soil with treatment of N＋OF exhibited the fastest nitrification and denitrification rates, followed by N treatment. The ni-trification and denitrification rates were higher in plastic film-mulched soil than those in non-mulched soil in the same fertili-zation treatment.

关 键 词：BaPS系统 硝化速率 反硝化速率 覆膜 

分 类 号：S143.13[农业科学—肥料学] S275.6[农业科学—农业基础科学]