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近年来,大理市部分区乡蚕豆矮缩病有蔓延扩大的趋势。全市发病面积约15000亩,占蚕豆播种面积的15%。轻病田一般减产30～40%,重病田区则灭产无收,是实现蚕豆平衡增产的主要限制因子。八十年代初大理市农技站阳和基点对蚕豆矮缩病进行施钾防治,取得了明显的防治效果。近年来发病面积逐渐扩大,重病田的发病率,病指均高,成为毁灭性的病害,从而引起有关部门的重视,在备足硫酸钾的条件下,1986年举办了千亩以上的蚕豆矮缩病施钾防治试验。虽然在严重霜雪灾害袭击下,仍然取得较好的防治效果,提高了蚕豆发病区的产量和经济效益。市农技站基点在模清钾肥用量、施用时期之后,还对蚕豆生长中后期的重病田采取硫酸钾不同用量肥液泼浇试验,亦取得较好的防治效果。
In recent years, Dali City, part of the city of broad bean dwarfism has the trend of expansion. The city’s disease area of about 15000 acres, accounting for 15% of broad bean sown area. Slightly reduce the general yield of 30 to 40% of fields, severe disease area is off the income crop, is to achieve a balanced production of broad bean main limiting factor. At the beginning of 1980s, Dali City Agricultural Station Yang and the basic point of broad bean dwarf disease applied potassium control, and achieved significant control effect. In recent years, the area of disease gradually expanded, the incidence of serious disease, disease index are high, a devastating disease, which caused the attention of the departments concerned, in full potassium sulfate conditions, in 1986 held more than a thousand acres of beans short Reduction of potassium applied to control the disease test. Although under the severe frost and snow disaster, it still achieved better prevention and control effects and increased the yield and economic benefits of the areas where broad bean was affected. Municipal Agricultural Technology Station base in the clearance of potassium dosage, after the application period, but also to the growth of mid-and late-stage severe diseases of potassium sulfate to take different doses of liquid fertilizer pouring test, but also get better control effect.