除草剂莠去津对谷子及谷田杂草的影响

为了减轻谷农的劳动强度,促进谷子大面积种植,就春谷田不同时期、不同浓度喷除草剂莠去津对谷苗与谷田杂草的影响进行了研究。结果显示:播后出苗前,公顷喷38%莠去津3 000~6 000 ml为最佳适宜喷药时期和用量范围,既不为害谷苗,对杂草又有消灭和抑制生长作用;在4~5叶期,公顷喷1 500~3 000 ml,效果次之;在2~3叶期,谷苗对药剂表现特别敏感,不宜使用。

The Effect of Herbicide Atrazine to the Millet and Weed

The effect of herbicide Atrazine was studied on the millet and weed in the way that the concentrations of Atrazine were sprayed in different times to the spring millet field for lightening peasant's work intensity and promoting more large millet acrea.It showed that the best period and concentration were between post-sowing to pre-emergence with Atrazine 3 000~6 000 ml/hm2 because millet seedlings wasn't influenced and weed was eliminated and reduced in this way.Atrazine can be sprayed with 1 500~3 000 ml/hm2 also when millet had 4~5 leaves but the resut was inferior.When millet had 2~3 leaves,millet shoots were very sensitive to the drug and it can not be sprayed.