Autumn potato has a short growth period, good listing season, resistance to storage and transportation, and high price. It is also a good disaster relief and late autumn crop. In the reform of the farming system, the multiple cropping index can be increased, the output per unit area can be increased, and higher economic benefits can be obtained in a shorter period of time. However, the cultivation of autumn potato is affected by high temperature in the early stage, which is easy to cause rotten seedless seedlings; in the later stage, it is affected by low temperature, and the growth period is insufficient, which affects the yield. To achieve higher yields, you should master the following high-yield essentials:
The selection of a good variety of potatoes suitable for autumn sowing requires 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 Huaishu No. 6. 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.
When the seed potato is treated in autumn, it is generally in the hot and rainy season, and it is easy to rot, and the whole potato should be sown. It is best to use about 50 grams of potato chips for seed potato. Put the seed potato into the gibberellin solution of 5 mg per liter a week before sowing, soak for 5 minutes, remove it and put it on the sand bed to germination, the bud is 2 cm long. When it is taken out, it is placed in a cool place with scattered light, and it is planted after 2 to 3 days.
The timely sowing of autumn potatoes 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 is necessary to use the thin manure water to damp the drought in the sowing ditch to promote the growth of the seed potato.
Applying the base fertilizer to the autumn potato should pay attention to the application of the base fertilizer. Generally, 2000 to 2500 kg of pig manure and soil fertilizer are applied per mu, 15 to 20 kg of superphosphate, and 10 to 15 kg of potassium chloride are applied to the ditch. As a 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 during sowing, 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.
About 15 days after sowing in the field management, when the seedlings grow about 3 cm in the soil, the soil is weeded to ensure that the oxygen supply promotes the conversion of starch into sugar and the conversion of proteins into amino acids. Appear to flowering for about 35 days, during which we need to weed twice. In 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 the 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.
To prevent the length of the potato in the fat and rainy season, the potato should pay attention to prevent the lengthening of the middle and late growth of the potato, and the long-term expansion of the underground potato block, and strive for high yields, should take measures to curb the length. 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 of water, or 1 to 6 mg of chlormequat solution per kg. 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.
The main pests and diseases of the autumn and winter potato diseases are 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 blight is controlled by Phytophthora, Redolmir or Golden Remedol, and anti-virus cockroaches. When a cockroach pest occurs, it 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.
Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
Smart Home,Mini Gps Signal Tracker,Smart Door Window Sensor
Shenzhen Bio Technology Co., Ltd , https://www.huifantech.com