Due to its short growth cycle and high yield, sweet potato is deeply loved by growers and cultivated in most parts of the country. The main distribution areas are Beijing, Shanxi, Shandong, Henan, Tianjin, Hebei, Dongsan, Inner Mongolia, Yunnan, Sichuan. , Hubei, Gansu, Anhui, Fujian, Shaanxi, Hunan, Guangdong, Jiangsu, Jiangxi, Hainan and other places. Sweet potato can be used as food and vegetable, and can be processed into by-products to develop light industry. It has wide application and high economic value. Hui Nongwang Xiaobian talked about the high-yield cultivation management technology of sweet potato today.
1, variety selection
The variety should be selected according to the use of the sweet potato. The starch type sweet potato can be selected from varieties with high starch content such as Eshu No.6, Hushu No.9 and Xushu22; the edible sweet potato should have good taste and smooth potato shape. Varieties such as Eshu No. 4, Eshu No. 7, Zheshu 132, Ningshu 192, etc.; sweet potatoes for vegetables should be selected from leaves, handles, and tips, which are sweet, delicious, nutritious, and suitable for frying. No. 1, Fushu 7-6, Fucai Potato 18, etc.
2, nursery
Generally, high-yield sweet potato is selected from the method of seedbed cultivation. First, the seedbed is selected, and then the hot stuff of pig manure, crop straw and the like are placed in layers, and then the potato pieces are covered and covered with soil. The principle of covering the soil is as long as the potato pieces are not exposed. Yes, it doesn't have to be too thick. The principle of temperature control is high temperature germination in the early stage, moderate temperature and long seedling in the middle stage, and low temperature refining in the late stage. The bed temperature is maintained at 30-35 ° C. When the room temperature exceeds 30 ° C, the film should be uncovered in time. When the potato seedlings grow to 6-7 leaves, they are transferred to the refining stage. During the whole process of nursery, pay attention to keep the bed soil moist.
3. Transplanting and planting
Sweet potato is a root crop that requires deep soil, loose soil, fertile, and breathable soil conditions. Spring potato transplanting is generally carried out in April-May. When transplanting, the uniform seedling height is about 25 cm, and it is inserted with the scissors. It is advisable to use oblique insertion in the planting and inserting it as far as possible. In the middle and early July, the stems of potato seedlings were cut on the basis of spring potato, and the summer potato was planted in the form of spring potato. Note that the potato chips in the summer potato are generally more resistant to stress and disease, and have a better taste.
4. Field management
After transplanting, it is necessary to pay attention to the growth of potato seedlings in time, remove the dead seedlings in time, replenish the seedlings in time, and strengthen management, so that Miao will catch up. Traditional Chinese practices have the habit of turning over vines, but this habit tends to disturb the natural growth of stems and leaves, causing overlap and mechanical damage, affecting photosynthesis, and easily breaking adventitious roots, affecting the absorption of water and nutrients, restricting growth, and reducing production, so do not rest on its laurels, to scientific cultivation, do not turn the vine, not to mention the vine.
[Expand] knowledge, also known as sweet potato, potato, sweet potato, sweet potato, etc., the most well-known of the public, it is both food crops and cash crops, but it is likely that most people do not know the sweet potato is a vegetable, and has been the World Health Organization recognized as the world's best vegetables. Because sweet potatoes are rich in protein, fiber, amino acids, vitamins and minerals and other nutrients, enjoy the "longevity food" reputation
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