Chemical Weeding Techniques in Wet Rice Seedling Fields

The following recipes can be selected from Putian, which is based on yak grasses.
Pre-emergence soil treatment after sowing: 30% per acre with suffolk emulsion or 30% grass-killing special emulsion 75-100 ml (for early rice with a low limit), sowing the day to 3 days after sowing, 30-50 kg of watered . There should be no water layer when spraying, so as to avoid phytotoxicity. Control the weather forecast when spraying, and if any rainstorm occurs within 1-2 days after spraying, medication should be postponed so as to avoid damage to the seedlings by flooding. Drainage affects the efficacy.
Post-emergence stem and leaf treatment:
1. Use 60% butachlor EC per acre or 50-70 milliliters of 60% New Martial Emulsion. Apply 10 kg of wet fine soil in the 1-1.5 leaf stage of the seedlings. Do not apply pesticide when the dew is not dry. The seesaw should be flat and there should be no accumulation of water.
2. Use 50% of herbicide-killing emulsifiable concentrate 200-300 ml or 90% of herbicide-killing emulsifiable concentrate 100 ml per acre to spray 20-50 kilograms of seedlings in 1-1.5 leaf stage. Can not be filled with deep water after spraying to prevent phytotoxicity, can not be drained within 2-3 days to ensure efficacy.
3. Use 25-35 grams of 50% quinclorac WP per acre to spray 30-50 kg of water at 1.5-2 leaf stage. If Putian uses a lot of methazole, it should not be used.
4. Use 96-per-mu acre 80-120 ml of Da Zhuang Emulsion, spraying 30-50 kilograms of water at 1.5-2 leaf stage.

The following reference formulas can be selected from the fields of Putian, sedge, and broadleaf.
1, 35% agricultural (dichlorobenzyl) WP, 25-30 grams per acre, watered 30-50 kg, 2-3 leaf stage in rice seedlings, spray evenly with a hand sprayer. Wet application, irrigation 3 cm water after 1-2 days, water 5-7 days.
2. 50% eucalyptus net wettable powder. The northern rice seedbed uses 150-225 grams per acre, and watered 30-50 kilograms. Immediately after sowing, the soil is sprayed and the spray is evenly sprayed with a hand sprayer.
3. Put 100-150 grams per acre in the southern rice area of ​​Putian and mix it with 30-50 kilograms of water, spray evenly with a hand sprayer, apply the pesticide immediately after planting the valley, and apply it at the 1.5-2 leaf stage of the seedlings. Note that the field should be leveled to prevent local accumulation of water.

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