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- sustituted urea herbicide 取代脲类除草剂
- Starting from guanidine nitrate, diethyl malonate and glucide, the benzene sulfonyl urea herbicide primisulfurion-methyl is synthesized through five steps of reaction. 以硝酸胍、丙二酸二乙酯和糖精为起始原料,经5步反应合成了苯磺酰脲类除草剂氟嘧磺隆。
- Keywords high performance liquid chromatography（HPLC）;solid-phase extraction;sulfonyl urea herbicide;residue analysis;rice; 高效液相色谱法;固相萃取;磺酰脲类除草剂;残留分析;大米;
- urea herbicide 尿素除草剂,尿素类除草剂
- sulfonyl urea herbicide 磺酰脲类除草剂
- Eight substituted ureas herbicides were synthesized with bis(trichloromethyl) carbonate(BTC).The production structures were identified by elemental analysis and IR. 用二(三氯甲基)碳酸酯(BTC)代替光气,“一锅法”合成了8种取代脲类除草剂,产物结构经元素分析、IR确证。
- This herbicide degrades in moist soil. 这种除草剂在潮湿的土壤中分解。
- Paraquat is an effective and widely used herbicide. 百草枯是一种高效能除草剂。
- A clathrate compound, such as urea. 包合物一种笼状化合物，如尿素
- No single herbicide will control all weeds. 单独一种除草剂决不能防除所有的杂草。
- A white compound,C9H12N2O,used as a herbicide. 非草隆一种用作除草剂的白色化合物，
- But 120 tons of urea is really a small one. 但120吨尿素确实是个小数目。
- A white compound, C9H12N2O, used as a herbicide. 非草隆一种用作除草剂的白色化合物，C9H12N2O
- Paraquat is used as a herbicide in agriculture. 摘要巴拉刈在农业上作为除草剂的用途。
- How does the herbicide Roundup work? 抗农达除草剂是怎么工作的？
- Government tender urea must submit price by 18th noon. 政府招标尿素，须于18日正午前报价。
- Allantoin is one of the important urea derivative products. 尿囊素是一种重要的尿素衍生产品。
- Yes, only one herbicide is needed for all Roundup Ready crops. 而且，所有的抗草甘磷作物只需要一种除草剂。
- Estimation of octanol-water partition coefficients of urea herbicides using molecular connectivity method 分子连接性指数估算衍生脲类除草剂的正辛醇-水分配系数
- He attributed this to a dilution effect of the herbicide. 他把这归因于除草剂的稀释效应。
