油菜是我县重要经济油料作物，常年种植面积2486.6hm2，约占全县耕地面积的30％左右，无论是直播或是移栽田，草害都十分严重，随着油菜育苗移栽等高产栽掊措施的大面积推广，油菜田杂草防除已成为突出的问题，油菜田中尤以看表娘，早熟禾，繁缕等杂草密度大，生长迅速，与油菜 Rape is an important economic oil crops in our county, the annual planting area of ​​2486.6hm2, accounting for about 30% of the county area of ​​arable land, either live or transplanted fields, grass weeds are very serious, with rapeseed transplanting and other high yielding plants掊 extensive measures to promote the rape field weed control has become a prominent issue, especially in the canola field to see the cinnabar, bluegrass, chickweed and other weeds density, rapid growth, and rape