CAJ | 학술논문

采用室内模拟方法研究了二氯喹啉酸在山东、湖南、四川、云南4个烟叶主产区不同土壤中的降解动态，并探讨了土壤pH、土壤含水量、温度对其降解的影响。结果表明，二氯喹啉酸在4种土壤中的降解半衰期分别为26.8、23.9、35.6、32.4 d，在云南红壤中降解最慢。在酸性土壤中，二氯喹啉酸降解慢，半衰期长；土壤相对含水量由20%增至80%，二氯喹啉酸降解半衰期由32.1 d缩短至16.8 d。随着环境温度升高（15~35℃），二氯喹啉酸降解的速度加快（半衰期由43.3 d缩短至21.1 d）。半衰期与土壤pH的回归方程为y＝-3.575x＋48.425，R2＝0.9929；半衰期与土壤湿度的回归方程为y＝-0.2329x＋34.1，R2＝0.8038；半衰期与温度的回归方程为y＝-1.11x＋57.983，R2＝0.9139。
채용실내모의방법연구료이록규람산재산동、호남、사천、운남4개연협주산구불동토양중적강해동태，병탐토료토양pH、토양함수량、온도대기강해적영향。결과표명，이록규람산재4충토양중적강해반쇠기분별위26.8、23.9、35.6、32.4 d，재운남홍양중강해최만。재산성토양중，이록규람산강해만，반쇠기장；토양상대함수량유20%증지80%，이록규람산강해반쇠기유32.1 d축단지16.8 d。수착배경온도승고（15~35℃），이록규람산강해적속도가쾌（반쇠기유43.3 d축단지21.1 d）。반쇠기여토양pH적회귀방정위y＝-3.575x＋48.425，R2＝0.9929；반쇠기여토양습도적회귀방정위y＝-0.2329x＋34.1，R2＝0.8038；반쇠기여온도적회귀방정위y＝-1.11x＋57.983，R2＝0.9139。
The degradation dynamics of quinclorac in four kinds of soils (Shandong, Hunan, Sichuan and Yunnan) were studied in laboratory, and the effect of soil pH, moisture, and temperature on degradation was investigated. The results showed that the half-time of quinclorac in the soils was 26.8, 23.9, 35.6, and 32.4 days, and the slowest degradation was in Yunnan soil. The degradation rate of quinclorac in acid soil was slow and the half-time was long. The half-time of quinclorac decreased with increase of soil moisture and environment temperature. The regression equation of half-life with soil pH, moisture, temperature are y=-3.575x+48.425,R2=0.9929;y=-0.2329x+34.1, R2=0.8038;y=-1.11x+57.983, R2=0.9139 respectively.