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作为微生物灭蚊剂,球形芽孢杆菌(Bacillus sphaericus简称B.S.)和苏云金杆菌 (B.thuringiensis H-14.简称B.t.H-14)具有对非靶子生物安全和不污染环境的特点。但B.t.H—14持效短(一般3～4天)。而B.S.具有长残效优点,世界卫生组织认为B.S.是最有希望的一种微生物灭蚊幼剂。但至今还不清楚B.S.的长残效(Residual activity)是由于其持效(Persistence)
Bacillus sphaericus (B.S.) and B.thuringiensis H-14 (B.t.H-14) are safe and non-polluting to the non-target organism. But B.t.H-14 short-lasting (usually 3 to 4 days). While B.S. has the advantage of long residual efficiency, WHO believes B.S. is the most promising microorganism mosquito killer. But it is unclear to date that B.S.’s Residual activity is due to its persistence,