Herbicide injury prevention: Miao Ruomiao quite spraying; paddy shallow depth of less than 3 cm or flooded heart leaves no spraying; spraying Land is not too dry; not spraying when there is heavy rain or dew on the leaves; paddy leakage field is not spraying. Master agent is volatile, photolysis, Zhejiang fenoxaprop, if prone to physical or chemical reactions in the soil. Herbicide operating techniques: spraying of herbicides on weed stems and leaves of the method. In this way, Zhoukou fenoxaprop herbicides are not only exposed to the weed, it may come into contact with crops, fenoxaprop, and called for the herbicide has a high selectivity or directed spray, in order to achieve security facilities the purpose of the drug. After the seedlings before sowing soil treatment, a method has not been before sowing crops after emergence herbicide sprayed on the soil surface.