1·It was concluded that YJ-2000 not only showed low toxicity to the silkworm, but also acted no marked negative impacts on growth and development, cocooning as well as fecundity of the silkworm.
综合分析认为：YJ 2 0 0 0菌株对家蚕不仅低毒，而且对其生长发育、结茧和生殖力等均无明显的不良影响。