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Does yam belong to vegetables?
Yam has three properties: Chinese medicine, grain and vegetables.

Dioscorea refers to Dioscorea opposita, which belongs to Dioscorea of Dioscoreaceae and is intertwined with herbs and vines. Tubers are long cylindrical and grow vertically. Stems usually purplish red, right, glabrous. Simple leaves, alternate in the lower part of the stem, opposite above the middle. Capsule does not fold; Seeds are implanted in the middle of each ventricular axis. The flowering period is from June to September, and the fruiting period is July-165438+1October.

Distributed in Korea, Japan and China; In China, it is distributed in Henan, Anhui, Jiangsu, Zhejiang, Jiangxi, Fujian, Taiwan Province, Hubei, Hunan, Guangdong, Guizhou, northern Yunnan, Sichuan, eastern Gansu and southwestern Shaanxi. It grows on hillsides, under forests in valleys, by streams, in bushes or weeds along roadsides.

Extended data:

The breeding of Dioscorea zingiberensis adopts reed head breeding method and Lai's breeding method.

The propagation method of reed head: the segment with bud at the upper end of root tuber is used as seed, which is called reed head. In the winter of the first year, the root tuber with short neck, strong neck, no branches and no pests and diseases should be selected, and the root tuber can overwinter underground.

Reproduction method of Reiyoshi: When the aerial stems and leaves of Dioscorea opposita wilt before and after the first frost, pick or pick up Reiyoshi from the axils of the leaves, dry it for 2-3 days, put it in a bamboo basket, cover it or put it in a wooden box for storage. Attention should be paid to rodent damage during storage and ventilation is needed. Breeding with Reiyoshi requires 1 year cultivation to obtain tuberous roots as seeds.