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Rotary seeding of rapeseed in paddy field
The promotion of direct seeding technology of paddy fields is first of all, ploughing direct seeding (niul plowing, artificial ridges), followed by exempting (less) cultivating direct seeding (artificial or cattle plowing trenches, artificial ridges), and has now developed into rotary tillage. Live broadcast. The so-called rotary farming is the use of rotary cultivators to turn the soil, pounding, ditching, ridges and other processes in one go until the seeds are sown, and then directly sowing rapeseed Mechanized new technology. This technology has the characteristics of labor saving, easy operation, cost-saving and efficiency enhancement. Variety selection. As the live rapeseed can not remove very weak seedlings, we should choose varieties with high purity, high number of main inflorescences, strong branching ability, and a thousand major grains. And Xiangzayou 6 is a chemical male-killing seed production (parents are all high-yield and fertile varieties). There are no sterile plants at the time of planting, and the yield is high and the adaptability is strong. It can be planted in paddy fields. Prepared before the broadcast. One-season late rice harvested, 2.0-2.5 meters before sowing, using a rotary cultivator north-south to the compartment, clean up the "three ditch", the width of 30 cm, the depth of the ditch 25 cm, waist depth 30 cm, the ditch depth 35 centimeters or so. Sowing broadcast volume. Sowing before October 15th, the earlier the sowing date, the higher the output. Before October 10th, 0.2 kg per acre will be planted. After October 10, a seed quantity of 0.25 kg per acre will be sown. Can be broadcast, drilled, sowing, method for the mu 0.2 kg seed + dry fine soil 20 kg + "five increase" brand special boron for rape (basic fertilizer type) 500 grams, mix well after the separation of live broadcast. After sowing mu, 500 kg cover with fire ash or earth fertilizer. Scientific fertilization. Asked to re-base fertilizer, apply fertilizer early. Before the rotation tillage, 50 kg of ammonium bicarbonate was applied to the mu and 32 kg of calcium phosphate was applied after the rotation tillage (or 50 kg of compound fertilizer per acre of deep rape). Seedlings 3 leaf stage, acres of urea 5 ~ 10 kg. In late November, according to the seedlings, Mu recovers 8 to 10 kg of urea and 5 to 6 kg of potassium chloride. Do not apply nitrogen fertilizer after spring to prevent lodging. Convulsive period (mid-to-late February), mu with "five increase" brand boron fertilizer (foliar spray type) 2 ~ 3 packets of 30 kg of water spray. Chemical weeding. The first day before weeding, acre with 95% acetochlor 80 ~ 120 ml of water spray 15 ~ 20 kg, do not turn the top soil after spraying; the second time in the vegetable seedlings 3.5 ~ 4 leaves, mu Cents 2 packs of 30 kg water spray to control grass and broadleaf weeds. Reasonable water management. In case of autumn and dry weather from the end of September to the beginning of October, horse water should be timely fed and drought-resistant after sowing to promote seedlings and seedlings. After the spring floods, it is necessary to clear the ditch in time to ensure the smooth flow of the three ditch, rain lived in the field. Miao Dingmiao. Seedlings 4 to 5 leaf stage, do seedlings seedlings work, Dingmiao about 3 per square foot to ensure that 1.5 to 20,000 seedlings per acre. Chemical regulation. Seedlings 3 leaf stage, according to seedling potential, mu 15% paclobutrazol 30 ~ 40 grams of water 50 kg spray. Pest control. Focus on the prevention and control of cabbage caterpillars, aphids, leafhoppers, beet armyworm, sclerotium and other pests.