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沅江市常年种植苎麻18000～25000hm2,产值3亿～4亿元。近年来,白蚁成为苎麻的重要害虫,为害面积逐年扩大,为害程度逐年加重。1996～2000年
Yuanjiang City, planting ramie perennial 18000 ~ 25000hm2, 300 million to 400 million yuan output value. In recent years, termites have become an important pest of ramie, damage area expanded year by year, the degree of harm increased year by year. 1996 ~ 2000