论文部分内容阅读
紫胶霉病是紫胶虫主要的病害,在福建、广西及广东的部分紫胶产区普遍发生,严重影响了种胶和原胶的产量和质量。为有效地控制霉病危害,保证胶虫正常生长,提高种胶和原胶的产量和质量,我们于1980—1986年,对紫胶霉病的病症、病原菌、发生流行规律和防治方法进行了研究。一、病症、病原菌和发生流行规律观察1.症状紫胶霉病一般发生在胶虫二龄至成虫期,若湿度大,一龄胶虫也会发病,但以成虫期发生严重。胶虫一、二龄时如遇几天连绵细雨,病菌就会在胶虫背部或肚孔处的蜜露上滋生,
Purple mold mildew is the main disease of the lacongo, which occurs in some areas of lac products in Fujian, Guangxi and Guangdong, which seriously affect the yield and quality of the lacquers and gums. In order to effectively control the hazards of mildew, to ensure the normal growth of insects and improve the yield and quality of seed gum and gum, we carried out the epidemic and pathogenesis of the disease, the study. First, the symptoms, pathogenic bacteria and the prevalence of the observed 1. Symptoms of Rhizoctonia generally occurs in the second instar to adult worms, if the humidity is large, one-year-old insects will be the incidence, but serious occurrence of adult. Insects a second age, such as a few days in case of continuous drizzle, the bacteria will be in the back of the insect or belly hole honey dew breeding,