How to make sweet potato sprout quickly?

Control the temperature at a suitable temperature (15 to 25 degrees). Keep a certain humidity indoors.

1, temperature: sweet potatoes like temperature but are afraid of cold. Ground temperature 10℃, rooting for 5 days, 17 ~ 18℃, normal, 20℃ for 3 days, 27 ~ 30℃ only 1 day. Above 38℃, the respiratory consumption is high and the growth of stems and leaves is slow. Below 20℃, the stems and leaves grow rapidly and stop growing at 15℃. If it lasts too long below 10℃, the stems and leaves will freeze and die.

2. illumination: sweet potatoes like light. In the case of sufficient light, the leaves are thicker and longer, the stems and vines are stout, the conductive tissues of the stems are developed, and the yield is higher. When the light is insufficient, the leaves will turn yellow, with many fallen leaves, short leaf age, slender stems and vines, underdeveloped transportation organization, less transportation of organic nutrients assimilated into root tubers and low yield.

3. Moisture: Sweet potato is a drought-tolerant crop, but too much and too little moisture is not conducive to increasing production. Sweet potato is afraid of flooding, especially after it comes out, which has a great influence on yield. The uneven growth rate inside and outside the root tuber is caused by the uncertainty of soil moisture, and the phenomenon of skin cracking often occurs. In short, sweet potatoes are afraid of both waterlogging and drought. The masses said, "dry roots are long, wet roots are long, and dry roots are long." In order to obtain high yield of sweet potato, irrigation should be timely and appropriate according to specific conditions, drainage should be timely and thoroughly, intertillage should be strengthened, and soil moisture in dry land should be maintained.

4. Nutrients: Sweet potato has strong fertilizer absorption ability and is barren-tolerant, but sufficient fertilizer must be applied for high yield. Besides nitrogen, phosphorus and potassium, sulfur, iron, magnesium and calcium also play an important role. Among the three elements, sweet potato has the largest demand for potassium, followed by nitrogen and phosphorus. According to the analysis, per 1000 kg sweet potato contains 3.5 kg nitrogen, 5.6 kg phosphorus 1.75 kg potassium. Therefore, increasing potassium fertilizer and timely and appropriate application of nitrogen and phosphorus fertilizer can significantly increase production.

5. Soil: sandy loam and sandy soil with deep soil layer, rich organic matter, looseness and good ventilation and drainage performance. When the soil is sticky, the root bark is rough with color difference, the potato shape is irregular, the yield is low, and it is not resistant to storage. However, sandy loam and sandy soil generally have low fertility and poor water retention capacity, so measures such as fertilization should be taken to gradually improve soil fertility in order to obtain high yield. Sweet potato is acid and alkali resistant, and its PH value is about 4.5 ~ 8.5, but 5.2 ~ 6.7 is suitable. When the soil salt content exceeds 0.2%, it is not suitable for planting sweet potato.

Variety selection

1, Red Heart Potato: Red Heart Potato is characterized by soft texture, bright color, soft and sweet taste, no gluten, rich vitamin content, moderate sweetness, thin skin, easy peeling and good quality. The weight of a single succulent root is about 150g, the yield per mu is about 3000kg, and the growth period is 90 ~ 120 days.

2. Purple sweet potato: Purple sweet potato is characterized by high selenium, iodine and anthocyanin content, fragrant powder (low sugar), taro flavor, thin skin, easy peeling and good quality. The weight of a single succulent root is about 65438 0.50g, the yield per mu is 2500-4000kg, and the growth period is 90-65438 0.20g.. ..

3. White sweet potato: White sweet potato is characterized by high starch content, less crude fiber and vitamins, beautiful appearance, balanced nutrition, unique flavor, thin skin, easy peeling and good quality. The weight of a single succulent root is about 150g, the yield per mu is 3000-4000kg, and the growth period is 90-65438+.

4. Sweet potato: Sweet potato is characterized by high carotene content, soft and sweet taste, slightly carrot flavor, thin skin, easy peeling and good quality. The weight of a single succulent root is about 65,438 0.50g, the yield per mu is about 5,000kg, the growth period is 90 ~ 65,438 0.20 days, it is suitable for all kinds of soils, and the management is convenient, so it can be planted with two crops.

References:

Cultivation Techniques of Sweet Potato —— Baidu Encyclopedia