前不久,笔者到某蔬菜基地了解蔬菜生产情况,看到一块菜心地里的马齿苋比菜心还多,有一块菜地里长满了野苋菜。据调查,菜心地里的主要杂草有禾本科的马唐、牛筋草、旱稗、狗尾草、早熟禾等,莎草科的香附子、碎米莎草、飘拂草,双子叶杂草马齿苋、野苋菜、灰藜、春蓼、空心莲子草等。草害一般导致减产30%~50%,有的甚至发生草荒而绝收,菜农不知如何防除。该基地的菜心主要是采用的直播,前茬收获后,即用灭生 Not long ago, I learned about a vegetable production base in a vegetable base to see a heart of potatoes in the heart of the purslane more than cabbage, there is a piece of vegetable fields covered with wild amaranth. According to the survey, the main weeds in Brassicaceae include gramineous crabgrass, tendon grass, barnyardgrass, Setaria viridis, Kentucky bluegrass, Cyperus rotundus, broken beech weeds, windblown grass, dicotyledonous weeds Purslane, wild amaranth, quinoa, spring Polygonum, Alternanthera philoxeroides and so on. Grass damage generally led to cut 30% to 50%, and some even occurred grass waste and never crop farmer I do not know how to control. The base of the cabbage is mainly used live, before the harvest, that is used to destroy