随着我区林果业的发展 ,苗圃面积不断扩大 ,近几年 ,普遍推广地膜覆盖技术后 ,杂草出土早 ,密度高 ,且中耕锄草困难 ,致使草荒严重 ,严重影响苗木生长 ,增加了锄草的工作量 ,加大了育苗成本。为此 ,我们从 1 996～ 1 999年在永宁县征沙渠对苗圃地杂草进行化学防除田间试验 ,取 With the development of forestry and fruit industry in our district, the area of ​​nursery has been expanding. In recent years, weeds have been unearthed earlier and have higher density due to the widespread application of plastic film mulching techniques. As a result, cultivation of weeds has become more and more serious, seriously affecting the growth of nursery stock and increasing hoeing Grass workload, increased seedling costs. To this end, we from 1996 to 999 years in Yongning County Shadiqu nursery weeds chemical control field trials, take