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1. Variety selection. No-tillage seedlings have a shallow root and are prone to lodging in later stages. For production, “double low†rapeseed varieties with high yield, moderate plant height, and good lodging resistance should be selected for direct seeding cultivation without tillage.
2. Suitable for early broadcast. After harvesting, late rice should be sown early in the harvest, generally sowing in late October and late at the end of October. When the soil is moist and suitable for early sowing, the seeding rate per acre is 0.15-0.2kg; when the soil is dry or late sowing, the seeding rate per acre is 0.2-0.3kg. In order to make the seed evenly, 0.5 ~ 0.75 kg fry rapeseed and seeds can be mixed and then sown. The sowing method is mainly based on live broadcasting and on-scene broadcasting. It promotes the live broadcasting of mechanical bars and improves the efficiency of field operations.
3. Mechanical trenching. After sowing, trenching and trenching were applied in time with a trencher. The width of the trench was 20cm, the depth of the trench was 15cm, the width of the trench was 120-140cm, and the thickness of the trench cover was 2 to 3cm. After the ditching of the machine is completed, ditches at Tianjiao are excavated and the soil in the ditch is removed to make the ditch and ditch communicate. Covering 150-200 kg of rice straw per acre evenly, both shading moisture to promote the whole seedlings, but also fertilize the soil.
4. Dianmiao Dingmiao. Seedlings 2 leaves 1 heart time seedlings, inter-tightening and thinning. 3 to 4 leaf stage Dingmiao, for early sowing of the plot, per mu seedlings 1.2 to 18,000; for late sowing of the field, 1.8 to 24,000 per mu leave seedlings.
5. Chemical weeding (1) Treatment before planting. For the heavier weedy plots before sowing, 3 to 5 days before sowing, 10% glyphosate 500ml flush water 40kg per acre spray culling no-tillage paddy field old weeds.
(2) Dealing with seedlings after sowing. After sowing the soil, use 50% acetochlor 50-75ml or 60% butachlor 100ml flush 40kg per acre for soil treatment to prevent weed germination.
(3) Stem and leaf treatment. The grass field dominated by grasses and weeds, in the weeds 3 to 4 leaf stage, per acre with 5% fine grass grams 50ml or 10.8% efficient cover grass can 20 ~ 25ml, flushing 40kg spray control. For broad-leaved grass-based plots, weeds are sprayed with 5kg of high-cone 30ml per acre in the 2 to 3 leaf stage of the weeds, and sprayed with 40kg of spray.
6. Scientific fertilization. The use of pre-promoted fertilization on the live rapeseed fertilizers was based on foot fats, early Miao manure, and stable fur manure, which promoted winter and spring double cropping. Generally, the total amount of fertilizer applied per acre is 15 to 16kg nitrogen fertilizer, 25kg superphosphate, 7.5kg potassium chloride and 1kg boron fertilizer. General phosphorus, potassium, boron fertilizer as a base fertilizer for a one-time application, nitrogen fertilizer application ratio of 30% of base fertilizer, Miaofei 35%, 15% of wax fertilizer, 20% of coating fertilizer.
7. Pest control. The weight of live locusts in the middle of the rapeseed was heavy and was controlled by spraying 10% imidacloprid 20g and 40kg per acre. In the early flowering and flowering period, 50% perkinac per 100 grams or 25% is used to make 100 grams of 20-40 ml, and 40 kg of water is sprayed to prevent Sclerotinia.
8. Harvest in a timely manner. When the pods are yellow, they are manually pulled out, cooked after being piled, and threshed on sunny days. If mechanical harvesting is used, when the rapeseed maturation rate reaches more than 90%, clear harvest will be achieved.
No-tillage Direct Seeding High-yielding Cultivation Technique
No-till direct seed rape is a kind of rapeseed cultivation method in which rapeseeds can be directly sowed after the late rice is harvested, the old weeds are not plowed, and the old weeds are simply screeded. It has the characteristics of saving labor costs, and the yield is basically the same as that of transplanting rapeseed. No-tillage live rapeseed is more suitable for harvesting than transplanting rapeseed. With the promotion of rapeseed sowing and harvesting technology, its development prospect is very broad.