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Autumn potato-free tillage straw
Potato no-tillage straw full cover cultivation techniques, is a simple, easy labor-saving, high yield and efficient cultivation of new technologies, the specific cultivation methods are as follows: Timely sowing: straw covered potato planting, generally 1 mu of potatoes required 2 acres of field Straw. Therefore, it is common to use the technique to grow autumn potatoes in rice fields. The plains in central Zhejiang can be planted in the middle and early September and mountainous areas can be planted in the middle to late August and the end of August. If late rice fields are used, spring potato cultivation is usually conducted in early February. Seed treatment: Autumn potatoes should be selected from the varieties of “Dongnong 303â€, “Zhongshu 3†and “Zhengshu 85-2†with short growth period, rapid expansion of tubers and short dormancy periods. The planting of spring potato after harvesting the small potato chips is done with 130-160 kilograms per acre. Before sowing seed potatoes, artificial measures should be taken to break the dormancy period by soaking in reservoir cold water or well water for 1 hour 7-10 days before sowing, or soaking with 5-10 ppm 90% aqueous solution for 30 minutes, and drying. Dry germinate in the cool place, when the bud grows about 1 centimeter, can sow. Soil preparation: no-tillage sowing of potatoes in paddy fields, the width of the soil according to the soil and soil drainage conditions, usually 2-2.5 meters, can use the original "bearing yield channel" in paddy fields to clear the ditch. If the original rice borer is too wide, the central area may be expanded by 1-2 furrows, and the mud will be smashed and scooped in the center of the earthworm so that the earthworm will be slightly curved to facilitate drainage and containment. Basal Mushi decomposed organic fertilizer 1000-1500 kg, compound fertilizer 30-40 kg. Organic fertilizer can be applied as a cover fertilizer. When sowing, the potato tubers are sowed. The large seed potatoes can be cut into 2-3 buds of small potato chips, immersed in 2500-5000 times of 50% carbendazim wettable powder, until the cut surface is slightly dry. , Apply incisions with plant ash and sow every other day. When sowing, put the tuber directly on the surface of the planter and press it slightly to make the seed plant fully contact with the soil. Sowing distance 40-50 cm, spacing 30-25 cm, the border can be more dense, spacing of about 20 cm. Put the potato block well and fertilize it. Put the compound fertilizer on the line and keep it away from the potato block more than 5 cm to avoid the bad contact caused by the chemical fertilizer and the seed potatoes. After sowing, the rice straw can be covered, and the thickness is generally 8-10 cm. The direction of the rice straw is perpendicular to the edge of the rice straw. The base of the rice straw is connected to the top of the rice straw, and the whole rice straw is covered. The thickness is uniform and no gap is required. If the cover is uneven or too thin, light leakage is likely to occur. When the tubers grow up, green skin will appear at the first sight, affecting the commercial nature; it cannot cover too thick, and the maximum thickness should not exceed 15 cm. At the same time, straws should be avoided from intertwining and entangling so as not to affect sprouting. Field Management: After sowing, generally rely on rainfall to keep the soil moist, if the early autumn drought encountered, it should be irrigation "race horse water" to ensure emergence, to Qimiao, strong seedlings. The covered straw will inhibit the growth of weeds and reduce the diseases of the potato plants. Therefore, pesticides, cultivators, top dressings, and weeds may not be applied. General grasses and rice bran do not affect the growth of potatoes. If there are large grasses, they can be used. Feet to step on or squat, do not need to use herbicides. Harvesting in batches: After covering the straw, the potato will grow on the surface of the crop. As long as the straw is picked up, it can be picked. Even if there are few pieces of potato, it will be easily harvested. At the same time, they can be harvested in batches according to the market conditions and the size of the potato chips. The large first harvested potato chips can continue to grow.