Sweet potato is rich in nutrients and has the reputation of “longevity food”. Long-term consumption is very beneficial to the human body. In recent years, the market price has gradually increased. Among them, organic sweet potato is most liked by consumers. Everyone knows that sweet potato is inseparable from fertilizer. Can't do without pesticides, so how to grow high-quality sweet potatoes? The following is a high-yield cultivation technique for organic sweet potatoes.

1 Technical points for preparation before planting

1.1 Selection of planting land

The choice of planting land should firstly ensure that the ecological environment is not destroyed. On this basis, the land that is conducive to increasing the yield of sweet potato should be selected. According to scientific data, the land that meets the growth requirements of organic sweet potato is selected for planting, which is to increase the production of organic sweet potato. The basic technical method.

1.2 Selection of organic sweet potato varieties

First, the appropriate sweet potato variety should be selected through the content of nutrient elements in the planting land and the ratio between the elements and the specific conditions of the soil. Don't be blind when choosing. It should be combined with practical experience, and a large number of screenings, and then choose the best, whether the variety selection is correct, is the basis for determining whether to increase the production of organic sweet potatoes.

2 Management techniques in the process of organic sweet potato planting

2.1 Closed management techniques during cultivation

The cultivation requirements of organic sweet potato are stricter and need to meet the standards required for planting. Therefore, closed management should be carried out during planting to create a safe environment for the growth of organic sweet potato. The cultivation equipment should also be treated in strict accordance with the cleaning steps to ensure organic sweet potato. Not contaminated during planting.

2.2 Seeding technical points

In the early stage of sowing, seedlings can be grown using a film-covered hot-bed technology. The brewed hot matter should reach a thickness of 20 cm in the seedbed, and then cover it with five centimeters of fine soil. Then, the disinfected organic sweet potato seeds can be separately discharged according to their size. After that, it is necessary to pay attention to the adequate watering of the bottom water and the gap between the seed potatoes. It needs to be filled with fine soil, then the film can be covered to increase the growth temperature of the organic sweet potato in the early stage, and the cold resistance ability of the seedlings can be used in the late seedling stage. After 30 days of seedling age, seedlings or seedlings should be cut. When selecting seedlings, seedlings with good leaf quality, dark green color and no pests and diseases should be selected. After selecting the available seedlings, the seedlings should be topped or centered. The length should be 15 to 20 centimeters. The cutting requirements should be flat. Do not cut obliquely. The sweet potato vines should be inserted into the planting land as soon as possible. Seedling survival rate. After the seedlings are planted, you can choose to dilute the manure for fertilization. After fertilization, cover two to three centimeters of nutrient soil to ensure the nutrients needed for the growth of the seedlings. The distance between planting seedlings should ensure that the ridge distance is reasonable and the seedling distance is reasonable, and it can be appropriately densely planted in areas with high land fertility. In the planting period of transplanting, it should be selected as much as possible after rainy or rainy. The planting technique of oblique insertion method is adopted, and planting is carried out according to the plant spacing, and the bottom of the seedlings is completely purchased into the soil to ensure the survival rate of the seedlings.

2.3 Organic Sweet Potato Growth Management Technology

After planting seedlings, the growth should be checked in time after 3-4 days of seedling age. In case of lack of seedlings or emergence of live seedlings, timely replanting should be carried out. Replenishing seedlings should also choose rainy days. If weather conditions do not allow, Artificial watering can be used to ensure that the seedlings get enough water to ensure that the seedlings can survive in the later stage. For the above work, it should be implemented in time to increase the land use rate and increase the production of organic sweet potatoes. When the plants have been guaranteed to survive, attention should be paid to checking the growth of weeds in the planting land and weeding in time. Weeds are not conducive to the growth of organic sweet potatoes. When the length of the potato vine reaches 50 cm, 15% paclobutrazol 750g/hm 2 can be used for water treatment to control the growth of the sweet potato leaf surface too fast, which affects the growth rate of the fruit. During the rapid growth of organic sweet potato roots, spray with paclobutrazol or potassium dihydrogen phosphate to ensure partial growth of organic sweet potato fruit, and increase the overall yield of organic sweet potato from increasing single sweet potato yield.

3 pest control technology

Organic sweet potato pests and diseases are different due to different planting areas. The diseases mainly include root rot and black spot, and insects are prone to leaf beetles and tigers. The control measures can be carried out by selecting the disease-free residual land for cultivation. When cultivating seedlings, try to choose the cultivation with good growth conditions. The fertilizer used should pay attention to whether it is completely decomposed. It is also possible to effectively prevent and protect organic sweet potatoes from pests and diseases by spacing corn and organic sweet potatoes. If pests and diseases are found, they should be disposed of immediately and the pests and diseases should be pulled out in time. The prevention and treatment of black spot disease can be selected by antibiotics soaking seeds to prevent black spot disease; root rot should be sprayed with its copper hydroxide dilution solution. The control of organic sweet potato pests and diseases should pay attention to the principle of no pesticides. Therefore, prevention and treatment should be taken for pests and diseases, and pesticides should be avoided to cause damage to organic sweet potatoes.

The above is about the high-yield cultivation method of organic sweet potato. In fact, from the above planting methods, it is not difficult to plant organic sweet potatoes. It is only necessary to pay attention to selecting good sweet potato varieties to prevent and control pests and diseases. What are you waiting for? The planting method can be planted according to the planting method shared by Xiaobian.

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