【摘要】 紫花苜蓿为豆科多年生优质牧草,常常因为苗期杂草危害造成严重减产,甚至导致种植失败。在日光温室、塑料大棚、土坡荒地和基本农田条件下,应用化学除草剂进行防治试验。结果表明,使用化学除草剂播前进行土壤处理、播后苗前进行地表封闭和出苗后进行茎叶处理,均可有效控制紫花苜蓿苗期田间杂草危害。更多还原

【Abstract】 Alfalfa is a high quality perennial leguminous grass. Weeds in seedling stage often cause serious reduction of product or even a failure. Experiments on chemical control of weeds in sunlight greenhouse, big plastic shed, waste slope land and basic farmland were carried out. Results show that either application of herbicide in the soil before sowing, or spraying over the soil surface after sowing, or stem and leaf treatment after sprouting can control the harm of weeds effectively in alfalfa field.更多还原