就除草剂及尿素混剂在稻田施用后的效果进行了研究。除草剂丁草胺、除草醚、农得时和果尔与尿素混用，与单施尿素处理相比，可以获得较好的杂草防除效果并提高水稻产量、丁草胺、禾大壮、杀草丹、除草醚以及丁草胺十二甲四氯在一定使用剂量下均显著地抑制脲芽孢八叠球菌[Sporosarcinaureae（Beijernck）KluyveretvanNiel]的繁殖。而快杀稗、都尔、二甲四氯、苯达松、果尔、农得时、草克星和乙草胺对脲芽孢八叠球菌无影响。 The effects of herbicides and urea mixtures on paddy fields were studied. Herbicide Butachlor, Nifedipine, Nongshikuang and Gulou mixed with urea can achieve better weed control effect and increase the yield of rice than that of urea alone. Butachlor, Oxaliplatin, fencholine, and butachlor dodecamethylene tetrachloride significantly inhibited the propagation of Sporosarcina ureas (Beijernck) Kluyveretvan Niel at all doses. The fast kill barnyard grass, are Seoul, four tetrachlor, bentazon, fruit Seoul, agricultural time, grass nemesis and acetochlor Ureaplasma urealyticum no effect.