Severity of the diseaseis closely related to temperaure, RH and nutrition of soils.Copper-hydroxide, Junduqing and streptomycin were the best controling efficacy in the tested bactericides screening in laboratory.

• 室内药剂筛选试验表明：可杀得、菌毒清、农用链霉素均有较好的抑制效果。