【摘要】 室内药敏试验０．１％～０．５％保蚕宁２号对柞蚕链球菌有抑制作用，４龄盛食期添食０．１３％保蚕宁２号对柞蚕再感染空胴病有防治作用且效果显著．小区试验经添食药物的空胴病发病率下降６９．５％，死笼茧率平均下降３８．２５％．结茧率平均提高５０．２５％。农村多点试验治愈率达６３％，发病率下降６７．３％，结茧率提高５２．１１％．保蚕宁２号药源充足，价格适宜，可在柞蚕生产区普遍推广应用．更多还原

【Abstract】 Results from chemical sensitivity experiment in lab indicated that"Baocanning 2"at concentration of 0.1%-0.5% could inhibit the growth of Streptococcus pemtyi in oak silkworm. Tne chemicals adagedat profuse eating stage, i.e, at 3-,4- age of silkworm would obviously protect the silkworm from reinfection of empty-gut disease. The diseaseincidence was lowered by 69.25%, dead rate of cocoon decreased by 38.25% and cocoon spinning Percent increased by 50.25%, and silkworm matured 1-2 days earlier than that under normal condition in plot experiment of adding chemicals. Trial at many sites in rural areas showed that the chemicals made 63% diseased sillkworm recovered,disease incidence decreased by 67.31% and cocoon spinning percent increased by 52.11%,"Baocanning 2"could be exended in a larger oak silkworm production areas for its profuse supplies and chapet price.更多还原