降解有机氯农药的微生物菌株分离筛选及应用效果

以有机氯农药（６６６、ＤＤＴ）作为唯一碳源的Ｔｏｎｏｍｕｒａ培养基分离筛选后、得到降解６６６（ＢＨＣ）的主要菌株有１５３号（芽孢菌属Ｂａｃｉｌｌｕｓ）、４１１号（无色杆菌属Ａｃｈｒｏｍｏｂａｃｔｅｒ）和５１２号（假单孢菌属Ｐｓｅｕｄｏｎｏｎａｓ），其对６６６总量的降解率分别为５９．６％、５６．９％和５６％，对β－６６６的降解率分别为５５．９％、５７．６％和５６．９％降解ＤＤＴ的主要菌株有：２８８号

Isolation and selection of strains used to degrade organic chlorine pesticides and application effects

With the organic chlorine pesticides (666, DDT) as sole carbon resources, three strains, No. 153 (Bacillus), No. 411 (Achromobacter) and No. 512 (Pseudomonas), which can degrade 666 (BHC), were isolated and selected in Tonomura culture medium. The degradation rates of these strains were 59.6%, 56.9% and 56.0% for total amount of 666, and 55.9%, 57.6% and 56.9% for beta-666, respectively. The other strains, No. 288 (Alcaligenes), No. 410 and No. 411 (Achromobacter) to degrade DDT were also obtained. The degradation rates of the strains were 59.0%, 47.5% and 45.1% for total amount of DDT, and 59.9%, 57.6% and 49.6% for PP'-DDT, respectively. The degradation effects of the mixtures of the isolated strains in pot and field experiments were similar to those of the pure culture, indicating it is a feasible measure to apply the mixture of strains to degrade residual pesticides in fields.