The medicinal stems of Huaishan are usually purple-red. Huaishan has good medicinal value. It is mainly used to treat spleen deficiency and lack of food. It has the effects of nourishing the spleen and stomach, promoting body fluid and benefiting the lungs. But many people don’t know how Huaishan is grown. The following is a summary of Huaishan planting techniques that I have compiled for you. I hope it will be useful to you. Huaishan is characterized by twining herbaceous vines. The stems are usually purple-red. The single leaves are alternate at the lower part of the stem and opposite above the middle part; the leaves are ovate-triangular to broadly ovate or halberd-shaped, with large variation, deep heart-shaped base, and often 3-lobed to 3-deep lobes at the edge. The flowers are unisexual, dioecious, and form elongated spikes; the capsule is triangular and oblate or triangular in shape, with white powder on the outside. The flowering period is from June to September, and the fruiting period is from July to November. Huaishan planting method and variety selection. Currently, the main yam varieties planted include long-haired yam, yam with two hairs, and Japanese "Yamato taro" yam. Both the long-column yam and the long-column yam belong to the long-column variant of the common yam. Japanese yam is a variety with strong adaptability, good quality, strong disease resistance, high yield and promising development. When planting yam, the land should be dug and furrowed to avoid repeated cropping. Generally, crops should be rotated every three years, and peanuts and red taro cropping should be avoided. It is better to choose a plot with deep, loose and fertile soil. The upper and lower soils must be consistent. The lower layer has a clay layer and a white sand soil layer. It should be thoroughly broken when digging the trench. There should be no clay in the soil layer of at least 1 to 1.2 meters. , soil, sand and other interlayers. Otherwise it will affect the appearance of the tubers and also affect the quality. The soil should be neutral, and mechanical trenching is generally used for trenching at present. Yam cultivation is suitable in the north-south direction, and can be planted in double rows or single rows (you can widen the row spacing according to the need for east-west planting in individual plots). When planting in double rows, the large row spacing is 1.7 to 1.8 meters, and the small row spacing (in the ditch The row spacing between two rows of yam is 40 cm, the distance between plants is 20 to 25 cm, the ditch depth is 85 to 100 cm, and the ditch width is 70 cm. When preparing the soil, it should be leveled to prevent uneven watering. Drainage design must also be done to ensure that there is no accumulation of water in the field borders. When planting in a single row, the row spacing is 80 to 100 cm, the trench width is 30 cm, the trench depth is 90 to 100 cm, and the plant spacing is 20 to 25 cm.