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因连续多年种植青贮玉米,田间杂草种类多,基数高,危害严重,严重影响青贮玉米鲜草的产量与质量。利用人工除草既费时、辛苦,又成本高、效果差。采用药剂防除能解决以上各种矛盾,但使用不同的化学除草剂,其效果是各不相同的,1985年每亩用拉索200毫升加水35公斤喷雾,对藜的杀死效果差,对其它杂草药效期短,不能达到理想的效果。1987年每亩用阿托拉津100毫升加水40公斤均匀喷雾。设不喷药作CK。
Due to the continuous planting of silage corn for many years, the field has many weed species, high base number and serious harm, seriously affecting the yield and quality of silage corn fresh grass. The use of artificial weeding is time consuming, laborious, costly and ineffective. The use of chemical control can solve all the above contradictions, but the use of different chemical herbicides, the effect is different, in 1985, 200 ml of cable with 35 kg of water spray, the killing of Chenopodium poor, the other Weeds short duration, can not achieve the desired effect. 1987 per acre with atrazine 100 ml water 40 kg uniform spray. Set not to spray for CK.