CAJ | 학술논문

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。
위료해막하적관토양초화、반초화작용적변화규률,응용기압과정분리( Barometric process separation, BaPS)방법,연구료시담비、유궤비여담비배시화불시비3충불동시비처리적토양초화、반초화속솔재복막여라지조건하적동태변화。결과현시,불동처리하토양초화、반초화작용수착옥미생육기적추이유명현적변화。상동재배조시불동시비처리간토양초화、반초화속솔차이균체겁현저수평,차대소순서위담+유궤비배시처리>시담비처리>불시비처리(대조)；상동시비처리불동재배조시간토양초화、반초화속솔대소순서균위복막처리>라지처리。
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.