Autumn potato planting technology
Due to the storage resistance of the potato, the autumn potato has a short growth period, a good listing season and a high price. It is also a good disaster relief supplement for the late autumn crop. Many farmers choose to grow potatoes. So what are the skills and techniques for planting potatoes in the fall? The following is the details, you are welcome to read! 1, select the fine species Potatoes suitable for autumn sowing require the formation of plump vegetative organs in the climatic conditions of late autumn and early winter. Therefore, it is necessary to select potato varieties suitable for autumn sowing, such as Kexin No. 3 and No. 4, Dongnong 303, Xinyi No. 4, Zhongshu No. 3, Zhongshu No. 4, and No. 6 Huaishu. These varieties have the advantages of short dormancy period, early maturity, high yield, lodging resistance, strong adaptability, neat potato chips, thin skin and small bud eyes. They are excellent quality edible varieties. 2, seed potato treatment When planting in autumn, it is generally in the hot and rainy season, it is easy to rot, and the whole potato should be sown. It is best to use about 50 grams of potato chips as seed potatoes. Put the seed potatoes into the gibberellin solution of 5 mg per liter a week before sowing, soak for 5 minutes, remove them and put them on the sand bed to germination. The buds are 2 cm long. When it is taken out, it is placed in a cool place with scattered light, and it is sown 2 to 3 days later. 3, timely seeding Autumn harvesting from sowing to maturity requires more than 65 days of growth. Potatoes are cool and have a suitable temperature of 16 to 20 °C. Autumn potatoes should avoid high temperatures. They are usually planted after the summer and before the autumn, that is, from the end of August to the beginning of September. When planting, it is best to catch the rain before and after the rain. If there is no rain, it should be wetted with thin manure water in the sowing ditch to promote the growth of the seed potato. 4, apply enough base fertilizer Autumn potatoes should pay attention to the application of the base fertilizer. Generally, 2000 to 2500 kg of pig manure and soil fertilizer, 15 to 20 kg of superphosphate, and 10 to 15 kg of potassium chloride are applied per mu, and they are applied to the ditch (hole) as the base fertilizer. After emergence, combined with cultivating, 10 to 15 kg of urea per acre is drenched with water for topdressing. If you encounter autumn drought when planting, except for drenching the ditch (hole) with thin manure before planting, it should be continuously drought-resistant 2 to 3 times every 3 to 4 days after sowing, and should be carried out in the evening on cloudy or sunny days. Urgent irrigation and drainage method to avoid causing rotten defects. When the seedling height is about 20 cm, the cultivation is carried out to facilitate the development of potato roots and the formation of roots. 5, field management About 15 days after sowing, when the seedlings grow about 3 cm in the soil, the soil is weeded to ensure that the oxygen supply causes the starch to be converted into sugar and the protein is converted into amino acids. Appear to flowering for about 35 days, during which we need to weed twice. During the bud flower period, the soil is ditched, and the height is 20 cm. When the seedling height is 10 to 15 cm, a quick-acting nitrogen fertilizer is applied to promote hair growth. In the sweet potato period, it is best to spray the potassium dihydrogen phosphate liquid fertilizer on the leaf surface. After the closure, manual weeding should be carried out 1 or 2 times, while the side branches are removed, and nutrients are concentrated for the growth of potato pieces. 6, prevent the length In the fat and rainy years, the potato should be taken care of in the middle and late stages of growth, and the growth of the underground potato tubers is unfavorable for high-yield production. Measures should be taken to curb the growth. The inhibitors used mainly include paclobutrazol, chlormequat and the like. For this kind of seedlings, the seedlings should be in the flowering stage of the potato, using 15% paclobutrazol wettable powder 50-80 g per acre, 30-50 kg water, or 1 to 6 mg per kilogram of chlormequat solution. Foliar spraying, spraying once every 7 to 10 days, even spraying 2 times, has a significant inhibitory effect on the long seedlings, which is conducive to increasing the rate of large potatoes and increasing production. 7, prevention and control of pests and diseases The main pests and diseases of autumn potato include late blight, mites and underground pests. In the middle and late September, 2% of Miller is used for 2 kg per mu to control underground pests; late-stage disease is controlled by Phytophthora, Redolmir or Golden Remedol, and anti-virus cockroaches. When cockroach pests occur, they can be controlled by gram. After spraying every 7 to 10 days, even spray 2 or 3 times, and remove the diseased plants in time. Galacto-Oligosaccharide 27% Powder GOS Powder,Galacto-Oligosaccharides Foods,Galacto-Oligosaccharides Prebiotics Qingdao Bailong Huichuang Bio-tech Co., Ltd. , https://www.qdblcycn.com
