姜,即生姜,品种较多。沐川主栽品种为白姜,是沐川县的特色经济作物,也是重要的出口创汇农产品,种植历史悠久,发展速度快,种植面积1000多hm2,产量10000t以上。但由于受到姜瘟病的危害,严重影响着沐川白姜的稳产增收。据调查,田(地)间平均病株率近19%,严重者病株率达53%;发病轻的 Ginger, namely ginger, more variety. Muchuan cultivated varieties of white ginger, Muchuan County is the characteristics of cash crops, is also an important export of foreign exchange agricultural products, planting a long history and rapid development, planting more than 1,000 hm2, yield 10000t above. However, due to the harm caused by the blast of ginger, Muchuan white ginger seriously affected the steady income. According to the survey, the average rate of diseased plants in the field (field) is nearly 19%, and in severe cases, the diseased plants rate is 53%. The incidence of mild