Sweet potato is called sweet potato in Xiao Wu's hometown. Sweet potato is a common crop in Xiao Wu's hometown, especially in the 1980s and 1990s. Xiao Wu remembers that there were more sweet potatoes planted at that time, with a harvest of at least 10,000 Jin. Anyway, sweet potatoes were planted in other places except for ordering food at home. At that time, the rice yield of Xiao Wu's family was low, and the rice harvested was not enough to eat, so sweet potatoes became the staple food of my family. Often around July, the sweet potatoes in the field will grow up, and my mother will go to the mountain to dig sweet potatoes back, wash them, chop them up, cook them in the rice, and put sweet potato granules when the water boils, so that the cooked sweet potato rice is sweet and fragrant.

So, what kind of soil cultivation is suitable for sweet potato? Xiao Wu's family has planted sweet potatoes for decades. According to past experience, sweet potatoes grow well, grow fast and grow big in sandy loose soil, and the sweet potatoes grow beautifully.

Because Xiao Wu is located in a remote mountainous area, where there is much cohesive soil and very little sandy soil, and the sandy soil is also used to grow peanuts, there is very little land for planting sweet potatoes in sandy soil, but when digging sweet potatoes in autumn, it is very obvious that the same seedlings, the same planting methods and the same fertilization situation make the sweet potatoes in sandy soil big, beautiful and beautiful. The sweet potato in cohesive soil is relatively small, and there will be some potholes on the surface, because there are small stones in cohesive soil.

How to grow sweet potatoes to be bigger? In fact, sweet potato is a relatively good crop. Xiao Wu thinks that efforts should be made mainly in the selection of sweet potato varieties, seedling raising, sweet potato seedlings, and fertilizer and management in the future.

I. Keep the seeds

In Xiao Wu's hometown, the large, well-proportioned and beautiful sweet potatoes are selected for planting. In September every year, when wild chrysanthemums bloom, sweet potato seeds can be dug, and the selected sweet potato seeds can be stored in the cellar. In Xiao Wu's hometown, every household has a cellar, which is dug in the hall at home. The fire will be lit in the hall in winter, which can play a role in heat preservation.

Step 2: Raise seedlings

In the next year's Qingming Festival, you can cultivate sweet potato seedlings. Xiao Wu's family chooses to sow them by line. First, dig the soil, and at the same time pick some cow dung in the ground. Then dig a pit at a distance of 20*30CM, choose sweet potatoes from the cellar, and then plant them in the pit. Generally, a sweet potato is planted in a pit. However, when planting, pay attention to the head and roots of sweet potatoes, and the head should not be planted backwards. After about 10- 15 days, when the sweet potato germinates to a height of 2-3CM, it is necessary to loosen the soil and spray some pig manure, and the sweet potato seedlings will grow very long for about 1 month.

3. Selection of sweet potato seedlings

In Xiao Wu's hometown, around May, the planted wheat is ripe. After harvesting the wheat, turn the soil over and row it at a distance of 30CM. Once it rains, the sweet potato seedlings will be cut back, and those thick sweet potato seedlings will be selected. They will be cut into three sections (that is, three leaves) with a knife, and the first leaf will be pinched off, leaving the second and third leaves. When inserting, cut one tree according to 25-30CM. When inserting one, hold the sweet potato seedling with your thumb and forefinger and press it, so as to prevent water evaporation and ensure the survival rate of the sweet potato seedling. If there is no sunshine for about three days, and it is cloudy or rainy, it will be fine without pressing, and the sweet potato seedlings can survive almost 100%.