【摘要】 对哈尔滨地区种植牧草紫花苜蓿Medicago sativa 进行了封闭灭草试验,结果表明,10 种除草剂的封闭灭草效果达到50%以上;对紫花苜蓿幼苗生长发育和经济产量都产生一定影响,影响程度因除草剂种类及其剂量配置的不同而异。综合封闭灭草的灭草效果和对紫花苜蓿幼草生长发育、经济产量的影响结果,优化筛选出苜草净中剂量、苜草净低剂量、豆草特中剂量可在紫花苜蓿田大面积生产中推广应用。更多还原

【Abstract】 s: In black soil area, an experiment on herbicides’ application to alfalfa field was conducted. The test showed that the effectiveness of all 10 herbicides were over 50%; which also influenced the young plants and final economic yield of alfalfa in accordance with herbicides and doses. Finally, three herbicides and their application doses were selected to be used in large areas.更多还原