随着甜菜栽培面积的逐年扩大和引种,甜菜黄化病为害越来越严重。既为害原料甜菜,又为害采种植株,块根产量、糖分及种子产量都会因染病而降低。据狼山甜菜试验站试验,从黄化症表现开始,偏丰产型品种平均每周减产4.3%,偏高糖型品种平均每周减产5.1%,病株块根含糖率比健株下降3～5度,种子减产30%左右。 As beet cultivation area expanded year by year and the introduction, beet yellow disease more and more serious. Not only harmful to the raw beets, but also harvested plants, root yield, sugar and seed yield will be reduced due to illness. According to the test of Langshan Beet Experimental Station, from the appearance of yellowing disease, the average yield of partial yield varieties was reduced by 4.3% per week, the average high yield of sugar type varieties was reduced by 5.1% per week, the rate of sugar content of diseased plant roots was 3 ~ 5 degrees, 30% reduction in seed yield.