First, remove the fields
1, fertilizer bed dry nursery bed. There are many weeds in the dry nursery bed of the fertilizer bed, and the harm is great. We must grasp the appropriate period in the prevention and control. We must fully use 42% of the new field cream spray and cover the film after spraying for half an hour. For leakage control plots, it is possible to control the surface water of the seedlings after the three-leaf stage, and then use 36% straw net 45 g fine spray 50 kg of water.
2, conventional rice paddy fields. Conventional rice seedlings in paddy fields, such as weeds, can be controlled by the following methods: (1) control within 4 days after sowing (must germination), use 30% suffolk to finely spray water, and keep the teeters moist after medicine; (2) master the Seedlings in the 2.5 leaf stage, after draining the surface water, use 36% straw to finely spray the water, rehydrate 24 hours after spraying, and keep 3-5 cm of water for 5-7 days. If a single sedge and broad-leaved weeds are the main crops, it is possible to drain the water from the seedlings after the 4-leaf stage of the seedlings. Each lo acre is sprayed with 13% dimethyltetrachlorodichlorobenzene (250ml) and water (60kg). Water 3-5 cm, water retention for 3-5 days.
Second, Weeding in Daejeon
1, conventional transplant rice field. Transplanting paddy fields mixed with barnyardgrass, sedges, dwarf mushrooms, etc., use 20% Youcaojing 35g and 10% benzethonium 10g/mu; or 20% Wanjiahuan 40-45g (1.5 bags) 10% plus 10% benzethonone. Transplanted fields, including isoflavles, wild leeks, and dwarf mushrooms, use 10-30% benzethonone per acre. Transplanting Daejeon, which is based on alfalfa, uses 20% Youcaojing 35 grams per acre. All the above formulas are mixed with 20 kg of wet fine soil per acre. They should be kept in water within 4-6 days after transplanting and the water should be kept for 1 day after 5 days.
2, throwing fields and seedlings transplanting fields. For fields containing grasses, sedges, and broadleaf trees, 53% of the comet can be used for 30-40 grams, or 50% of the grass can be used for 40-60 grams. Broad-leaved grass-based plots use 10% bensulfuron-methyl per acre for 15 grams of wet powder, all in 4 to 6 days after being thrown (inserted), 20 kg per acre with wet fine soil, until dew is dry Keep water and apply. Attention must be carried out after seedlings live, and after the use of drugs to maintain 3-5 cm water layer 4-5 days, the water layer is not suitable for flooding the heart and leaves, throwing alfalfa acetochlor and its compounding agent.
3, direct broadcast of rice field. Use 30% sprue per acre for 120 ml or 50 ml per acre for 36% straw. Method of application: Sputet and Steiner Ning are in charge of 50 kilograms of water per acre of water within 2-4 days after sowing of rice, and the surface is kept moist after treatment. Paddy fields with the above mentioned agents must be soaked with germination. Straw net control in the seedlings 2 leaf 1 heart drained water from the field, according to 50 kg of fine spray per acre of water, after 36 hours of drug rehydration and water retention for 5 days.
4, wheat rice Daejeon. Wheat weed control of field weeds adopts "one, two killing, three fillings" prevention and control strategies. "One" is the first 2-4 days after the rice planting. Use 42% of Newfield 120 ml of mixed soil per acre and 25 kg of groundwater. When the soil is evenly spread, use a rope to push the wheat plant back and forth. "Two kills." That is, after the wheat is harvested, it is controlled by the drainage of the wheat. The special herbicide Yuguojin per acre is used to spray the water, and the water is rehydrated and retained for 5 days after the medicine is administered. The “three compensations†are at the end of the rice tiller, according to the field. The types of weeds were selected from the group consisting of daughter's milk, dimethyl tetrachlorine, and other agents.
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