河北省满城县是全国草毒集中产区，草冬种植面积达5万亩。由于种植草惠存在“重茬障碍”，即头一年种植草毒后，第二年如果还在原地栽培就会死秧或严重减产，所以只能采取调换地块或原地换上的方法进行种植，限制了草蕉生产发展。为解决这一难题，满城县农业局的科技人员从1995 Mancheng County, Hebei Province, is a national concentration of grass-producing areas, grass winter planting area of ​​50000 acres. As the planting grass benefits exist “stubble”, that is, the first year planting grass virus, the second year if still in situ cultivation will die or seriously reduce production, it can only be replaced by replacement of land or on the way Planting, limiting the development of grass banana production. To solve this problem, Mancheng County Bureau of Agricultural Science and Technology staff from 1995