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平凉山药从明朝就开始栽培,已有四百多年历史。近20年来,种植面积不断减少,至1979年不足五亩地,濒于绝种。目前,我区恢复和发展平凉山药生产的要求日渐强烈。为此,了解平凉山药的生物学特性,调查总结栽培技术,对主要技术问题进行试验研究,对于促进山药生产具有重要意义。植物学特征与生物学特性平凉山药只有一个品种,属于薯蓣科家山药的长柱变种。 1.地下部:有薯块和须根。薯块具有明
Pingliang Yam began cultivation from the Ming Dynasty, more than 400 years of history. In the past 20 years, the area under cultivation has been declining. By 1979, less than five mu of land was on the verge of extinction. At present, the demand for the restoration and development of Pingliang yam production in our district is getting stronger and stronger. Therefore, to understand the biological characteristics of Pingliang yam, to investigate and summarize the cultivation techniques, to carry out experimental research on the main technical problems is of great significance for the promotion of yam production. Botany characteristics and biological characteristics Pingyao yam has only one species, belonging to yam family yam long column variants. 1. Underground: There are tubers and fibrous roots. Potato crisp with bright