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山东省自1963年起,大面积推广赛力散液浸苗防治甘薯黑斑病取得很好效果。1963年示范面积2万5千亩,1964年扩大到215万亩,到1965年再扩大为400余万亩,保苗增产作用显著,防治成本很低,是一个简便易行、经济有效的措施,主要表现在以下几个方面。 一、提高田间成活率。薯苗经过挑选、剪根、浸药等处理,把秧苗的带病率和带菌量降低到最低限度,所以栽苗以后,田间发病很轻,甚至找不到病株,达到一次栽秧,一次全苗。据17个对比材料统计,在栽秧后半个月左右的调查,用赛力散处理的秧苗,病株率为0—30％,平均为3.9％,而未经处理的病株率为2.8—100％,平均为45.9％;处
Shandong Province since 1963, a large area to promote Sai Li bulk liquid seedling prevention and treatment of sweet spot disease achieved good results. 1963 demonstration area of 25000 acres, expanded to 2150000 acres in 1964, and then expanded to more than 4000000 acres in 1965, seedlings increase production is significant, prevention and control costs are low, is a simple and easy, cost-effective measures, Mainly in the following areas. First, improve the survival rate in the field. After selection of potato seedlings, root pruning, soaking and other treatment, the incidence of seedlings and belt down to a minimum, so after planting seedlings, the incidence of the field is very light, can not even find the diseased plants, once a planted, once All seedlings. According to the statistics of 17 comparative materials, in the survey of about half a month after planting, the seedlings treated with saxipan showed a disease strain rate of 0-30% with an average of 3.9%, while the untreated strain rate was 2.8 -100%, an average of 45.9%; Office