Planting method of Chinese yam

1. Land selection: It is best to choose dry sandy soil with high terrain, deep soil layer, good drainage, and loose soil. Although it is good to achieve the same properties of soil layer, it is best to be slightly acidic.

2. Ditching and soil preparation: It is more suitable to plant long-rooted varieties at the row spacing of about 1 meter. The third trench on land is 27 ~ 3 1 cm wide and 145 cm deep. The excavated soil should be placed on both sides of the ditch in layers. After a few days of drying, the lower soil should be leveled and compacted once every 20 cm, starting from the lower layer to the upper layer, and all the sundries should be cleaned up.

3. Apply sufficient base fertilizer: after sowing and planting, until emergence. After that, the soil on both sides of the planting ditch was plowed to the depth of 18 ~ 28 cm, and the base fertilizer was applied to it.

Second, the planting time

North China is most suitable for planting in late April, the Yangtze River Basin is most suitable for planting in the first half of April, and South China is most suitable for planting in March-April. Generally speaking, the basic planting time is in April.

Extended data Chinese yam grows on slopes, valleys, forests, streams, roadside shrubs or weeds at an altitude of150-1500m. Dioscorea opposita is a short-day and warm-loving crop. The optimum temperature for seedling growth is 15-20℃.

The optimum growth temperature is 25-28℃, and the growth is slow below 20℃. It is suitable to grow in loose, fertile and deep soil, while flat species and block species can also grow in shallow and viscous soil. Yam is drought-tolerant, but not waterlogging-tolerant, so it is not suitable for planting in soil with too shallow or too wet groundwater level. The water content of sandy soil and loam is about 65438 08%.

Distributed in Korea, Japan and China; In China, it is distributed in Henan, south of Huaihe River in Anhui, Jiangsu, Zhejiang, Jiangxi, Fujian, Taiwan Province, Hubei, Hunan, Guangdong (Niutou Mountain in Zhongshan), Guizhou, northern Yunnan (Gongshan, Deqin and Lijiang), Sichuan, eastern Gansu and southwestern Shaanxi (350- 1500m).

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