Peppercorns and other vegetables such as peppers are generally protected by greenhouses, such as greenhouses. The temperature in the shed is high and the humidity is high. Most commonly used soil sealing agents have an effect on emergence. According to many years of experiments, diuramide is relatively safe for seedbeds, mainly to control grass weeds. It can be sprayed with 20% of pesticide dichlorfen emulsifiable concentrate 150-200 ml and 50 kg of water per acre before sowing. The amount of sand used is 120 ml per mu. The bottom water should be poured to keep the soil moist.
The solanaceous vegetables are transplanted in the field, and the common herbicides used before transplanting include trifluralin, Shitianbu, oxadiazon, isoproturon, etc. The appropriate agent should be selected according to the field grass phase. Fields such as bluegrass weeds such as bluegrass, horsegrass, and tendon grass can be used with 100-150 ml of trifluralin per acre to avoid application of strong light during high temperature period. The field where the sedge and the grass are mixed, 60-80 ml of 50% acetochlor per acre, no water can be accumulated in the field after application. The use of acetochlor at low temperature will have a certain inhibitory effect on the growth of vegetable seedlings. Capsicum is sensitive to acetochlor and used with caution. For the mixed field of grass weeds and broadleaf weeds, use 133-200 ml per acre (33% pendimethalin emulsifiable concentrate) or 150-170 ml of 50% isoproturon (according to relevant information, Isoproturon is only effective for grass weeds at the usual doses. If it is necessary to treat the broadleaf grass, it is necessary to increase the dose), and the soil surface moisturizing effect is good after application. Gramineous weeds, sedges and broad-leaved weeds can be used in the field of mixed weeds, oxaloxone or some compounding agents such as oxalicin (the complex of acetochlor and oxyfluorfen) Formulations and other herbicides . Covering the transplanted field, generally should be covered 2-3 days after spraying, and then transplanted pepper to prevent phytotoxicity.
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