It has the efficacy of strengthening the spleen and tonifying the lungs, benefiting the stomach and the kidneys, consolidating the kidneys and benefiting the vital essence, brightening the ears and eyes, assisting the five viscera, strengthening the muscles and bones, prolonging the will and tranquillizing the spirit, and prolonging the life. The planting period of hemp yam varies depending on the climatic conditions.
Requirement for the surface temperature stabilized at 9 ℃ ~ 10 ℃ can be planted, most of the regions in North China in mid to late April planting. As long as the surface is not frozen, the earlier the planting, the better. Early planting can make the root system developed, strong growth, if early planting, it is good to buckle the film, yield can be increased by 10% ~ 30%.
To adjust the amount of watering in a timely manner to meet the growth of the yam on the water requirements, water consumption, but also pay attention to drainage, do not make the yam plants flooded, so as not to lead to the whole plant "soak dead". After the fall in order to promote hemp yam tuber thickening, you can water a large water.
Extended information:
Cultivation
Planting a large amount of fertilizer, each production of 1,000 kg of tubers, about the need to absorb 4.32 kg of pure nitrogen, phosphorus pentoxide 1.07 kg, potassium oxide 5.38 kg. Yam contraindicated chlorine, should not use potassium chloride, emphasizing the heavy application of organic fertilizer.
High-yield field base fertilizer needs to be applied per hectare 45-75 cubic meters of rotted organic fertilizer, urea 250-300 kg, potassium sulfate 150 kg or so, in the field before the whole land, sprinkled on the field, plowing in the soil layer of about 25 cm.
Late October to November, when the stem and leaves are all withered, start harvesting tubers, tuber storage is mainly heat preservation and anti-freezing, the appropriate temperature of 2-4 ℃, relative humidity 80-85%, can be piled, buried or cellar, etc., in the warm south of China and the Yangtze River Basin, can be harvested with the market. Zero Yu Zi must be harvested at maturity.
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