Problems and Suggestions in Planting Colored Mini Sweet Potatoes

Miniaturization, high quality, colorization and nutrition are the main characteristics of mini-sweet potatoes. They are nutritious and contain easily digestible starch, protein and amino acids. They are also rich in vitamins C, A, B1, B2, E, and K. Vitamins and minerals such as calcium, phosphorus, iron, and potassium. The advantages of high quality, easy cultivation, easy processing, and high benefits are becoming more and more popular. In recent years, the planting area of ​​color sweet potatoes has been continuously expanding, and to a certain extent, it has achieved agricultural efficiency and increased farmers' income.

However, through actual surveys of production in recent years, it has been found that there are problems in many areas at different levels and that sufficient attention should be paid to them.
1. Planting and dispersing. The arbitrariness of farmers is relatively large. Although some counties and townships have a certain area, they still do not form a large scale and their market competitiveness is weak.
2. Lack of uniform introduction. The cultivar's renewal rate is slow, and there are blind introductions and random introductions. It is easy to cause the disease infection to spread and spread, which leads to the degradation of varieties, the decline of yield, and even the loss of food and commodity value.
3. Technology is not in place. Although the cultivation of mini-sweet potato is similar to that of common sweet potato, the technical points are slightly different. Severe illness in management. Such as the prevention and control of underground pests, lack of sufficient attention and prevention of some diseases. Sometimes rotten beds and rotten cellars cause unnecessary losses.
4. Reluctant to invest. Because virus-free sweet potato plants are obtained by heat treatment, stripping stem tips and tissue culture techniques to obtain virus-free sweet potato plants, and then detoxifying plants are expanded by using net sheds and isolation conditions to breed virus-free seed potatoes. Seedlings production process is complex, so the cost of potato seedlings is relatively high. Therefore, some farmers are reluctant to invest more in the purchase of potato seedlings, thus affecting the popularity of virus-free sweet potatoes.
In response to the above problems, the following suggestions are made:
1. Fully do market forecasting and analysis, adapt local conditions to regional value, expand scale, and enhance market competitiveness.
2. It is necessary to introduce or establish a sweet potato breeding base from the formal breeding department to accelerate the breeding and promotion of new varieties. Strengthen plant quarantine and prevent the spread of quarantine pests. 3. Full implementation of supporting cultivation techniques, selection of suitable virus-free sweet potato varieties, implementation of ridging, chemical control (sprayed paclobutrazol), extraction of vines, and reasonable fertilization, and other supporting measures; promote the use of carbendazim for soaking and dipping seedling stems to prevent diseases. Pesticide-free use of pollution-free pesticides to achieve standardized production. 4. Raise awareness. It is necessary to fully recognize the outstanding characteristics of high-yield and high-quality sweet potato. Planting virus-free sweet potato generally yields 30% to 50% more yield than ordinary sweet potato, and has good quality and good commercial quality, and can obtain good benefits.

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