春花生苗期,徐淮地区多为干旱少雨天气,有利于蚜虫发生和病毒病流行。本地区以斑驳病毒病为主,一般年份,7月上中旬发病率即达90％以上,给花生生产带来很大损失。从1981—1986年,我们进行了病害的防治试验和示范。现将结果报告如下。 材料和方法 一、种子来源:①无病种子是在防虫网室或温室中收获的健株种子。②低毒种子是在隔离区中用地膜栽培经拔除病苗后收获的种子。③粒选种子是从普通种子中选取的粒大饱满的一级种。④普通种子为一般生产用种。上述种子经网室内测定,种子传毒率分别为0,0.4％以下,1～2％,3～5％。 Spring peanut seedling, Xu Huai area mostly dry and rainy weather, is conducive to the occurrence of aphids and the virus epidemic. In the region, mottle is mainly mottle virus. In general years, the morbidity in mid-July reached over 90%, which brought great losses to peanut production. From 1981 to 1986, we conducted disease prevention and control experiments and demonstrations. The results reported below. Materials and methods First, the source of the seeds: ① disease-free seeds Harvest in the insect net room or greenhouse seedlings. ② low-toxic seeds in the isolation zone with plastic film after removal of seedlings harvested seedlings. ③ grain seed is selected from the seeds of a large plump first class species. ④ ordinary seeds for the general production of species. The above-mentioned seeds were measured in the net indoor, the rate of seed poisoning was 0, 0.4%, 1 to 2% and 3 to 5% respectively.