Wild yam is a perennial twining herb vine, with flowering period from June to August and fruiting period from 8 to 65438+10. Born on hillside forest edge, under shrubs, beside ditches. Wild yam is mainly produced in Liaoning, Jilin, Heilongjiang, Hebei, Inner Mongolia, Shanxi, Shaanxi and other places, with rich nutrition and homology of medicine and food. It has the functions of strengthening spleen and stomach, helping digestion, nourishing kidney and essence, benefiting lung and relieving cough, lowering blood sugar and prolonging life. This is a good nutritional supplement.
Characteristics of wild yam
Wild Chinese yam is a perennial twining herb vine with transverse roots, cork falling off and yellow section. Stem left-handed, glabrous. Leaves alternate, palmate and heart-shaped, with great changes, 8 ~ 15cm long and 7 ~ l3cm wide. The edge is triangular, shallow, medium or deep, with small terminal lobes, unisexual flowers and axillary spikes.
Male flowers sessile, perianth 6-lobed, stamens 6, female flowers often solitary, perianth 6-lobed, capsule ovoid, ovoid, with 3 broad wings. Wild yam can grow in all mountainous areas of Yunnan, and the requirements for soil conditions are not strict. It is suitable to use sandy loam with medium fertility, and the pH value of the soil is suitable to be weak acid to weak alkaline.
It grows better in fertile soil, loose soil and well-drained soil. For barren land, the fertility and physical and chemical properties of soil can be improved by applying organic fertilizer. Such as compost, manure, peat, etc. It must be fully decomposed before application to reduce the occurrence of pests and diseases.