The use of herbicides and skillful herbicides can have different effects after use. The pursuit of herbicides is more with less. Let's take a look at how to use herbicides. Weeds compete with rice plants for fertilizer, water, glory, and space, which brings great harm to rice production. The use of chemical herbicides for weeding can effectively solve the problem of grass damage and reduce labor intensity, and has become the main method to control rice weeds. Appropriate application. The occurrence of weeds in rice fields is generally the first germination peak from 7 days to 10 days after transplanting seedlings. This batch of weeds is mainly annual sedges such as weeds and sedges such as yarrow and thousand gold. Weeds. The second germination peak occurred about 20 days after transplanting. This batch of weeds was dominated by sedge weeds and broadleaf weeds. The first germination peak of weeds is large, early, and harmful. It is the main target of prevention. It should be based on early medication, that is, post-emergence bud application, except for stem and leaf treatment agents, generally in weeds. Apply before 3 leaf stage. Pharmacy selection. Rice fields are mixed with weeds, mainly weeds such as valerian, ragweed, squash, kohlrabi, cattle felt, dwarf sage, etc. When using the medicine, the selection of the weeds in the field should be effective, effective, and no residue. Herbicides. At present, benzidine, fast killing cockroach, rice grassless, butachlor and the like are commonly used herbicides. Instructions. Putian applied medicine is better than the two-leaf stage of alfalfa before the rehydration of the seedlings. The live field is applied in the second and third leaves of the seedlings. The transplanted field and the throwing field are 7 days to 10 days after transplanting. Period of application. The field water was drained 1 day before the application, and the water was rehydrated one or two days after the application, and the shallow water layer was kept for 5 days to 7 days. The application rate and application method should be carried out according to the instructions for use of each herbicide. Herbicides have to pay attention to the application time, the choice of the drug, and the method of use. After reading it, you can definitely use the herbicide.
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