绿麦隆[N-(3-氯-4-甲基苯基)-N’,N’-二甲基脲]是一种优良的麦田化学除草剂。每亩用25%的绿麦隆可湿性粉剂4～6两,在小麦播种后出苗前或麦苗二叶—心期施用,能有效地防除看麦娘、繁缕、碱茅、雀舌草、藜等多种杂草,效果可达70—95%。目前,土壤中取代脲除草剂的分析方法主要有两种。一种是把从土壤中提取的除草剂水解成苯胺,然后用比色法测定。另一种是直接用气相色谱法测定绿 Chlormequat [N- (3-chloro-4-methylphenyl) -N ’, N’-dimethylurea] is an excellent wheat field chemical herbicide. Per acre with 25% of chlorotoluron WP 4 ~ 6 two, after sowing in wheat or wheat seedling leaves before the two - heart period, can effectively control the see Anemarrhena, Sophora, capers, Quinoa and other weeds, the effect of up to 70-95%. At present, there are mainly two methods for the analysis of substituted urea herbicides in the soil. One is the hydrolysis of the herbicides extracted from the soil into aniline, which is then determined by colorimetry. The other is direct determination of green by gas chromatography