甜安宁在甜菜上的残留研究

The Degradation and Residue of Betanal AM11 in Sugar Beet

1991，1992年在宁夏银川市郊对甜安宁在甜菜和土壤中的消解与残留进行了研究。结果表明：甜安宁在甜菜中的消解速度较快，半衰期为1．4d，而在土壤中消解速度较慢，半衰期为14．8d。最终残留测定表明：16％甜安宁乳油，按有效成分计，每公顷用量820～980g，在甜菜定苗后施药一次，至甜菜收获时其植株，根中均未检出甜安宁。（植株＜0．05mg·kg（-1），根＜0．01mg·kg（-1））。

The degradation and residence of Betanal AM11 in sugar beet and soil were studied at Yinchuan for two years. The results showed that the degradation of Betanal AM11 in sugar beet was rapid and its half life was 1. 4 days,but the degradation in soil was slower,the half life was 14. 8 days. With the recommended dosage and timing of application,its terminal residues in sugar beet were lower than the upper residue limit (0. 1 mg .kg(-1) ).