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Because, in the past, sweet potato seedling, when there is no invention of plastic film, there is no shed can only use the kang, to set up a hanging scroll in advance, repair the kang, do seedling beds, in the pit fire, seedling beds, after the smoke, the cover is straw thatch and stick straw, rows of potatoes on the fine soil and also diligently spraying water.

Proverbs are the jewels of folk language, when the equinox meets the proverbs, it reflects a unique flavor and charm equinox agricultural activities. If the cuttings are planted afterward. Groundnut buds need a certain high temperature, low temperatures in the spring, groundnut is not easy to bud seedlings, so people use burn 2020 spring equinox is March 20, lunar February 27, rainy season is April 19, lunar March 27, the middle of a month's time really very reasonable and especially humorous, such as "spring equinox is not on the bed, grain rain plug not". The first time I heard of this proverb, I was lost in the clouds and didn't know what kind of plant to say, and then I realized that it was my favorite sweet potato, a proverb that tells us several . From the spring equinox to start the festival sweet potato mother seed did not start on the hotbed, then, to the rainy season there is no sweet potato seedlings planted.

In the past, rural planting of sweet potato is to take traditional farming methods of seedling, now have changed the traditional seedling method, either using livestock manure as a hotbed for seedling, or the use of greenhouse, a lot of places in the countryside began to cultivate sweet potato seedlings, in the valley before and after the rain to be transplanted to the field planting of the kangang way for the groundnuts to germinate. It takes about one month from the time the groundnuts are put on the kang to the time when the seedlings are ready to be harvested. The best way to plant groundnuts is to avoid spring frosts around the spring equinox, and the environment and conditions have changed dramatically, so young people don't know how to plant groundnuts. Huge changes, young people do not know "insert" what, it refers to the yam (sweet potato) that in the spring breeze seedlings, seedlings in a variety of ways, some open-air, some on the kang, the purpose of heat preservation, and now with a plastic film cover, to the rain, it is inserted in the spring yam best time.