论文部分内容阅读
平凉山药属薯蓣科家山药(Dioscorea batatas Decne)的长柱变种,是一种珍贵蔬菜和常用中药,也是出口农产品之一。山药含碳水化合物10—30%、蛋白质2—4%,为重要壮补剂。还含有可的松,可治风湿性关节炎等病。本地历来采用山药龙头繁殖法,其繁殖系数低于1;也有用山药切段繁殖,繁殖系数可达3至5,但成本高,很少采用。这两种方法不能进行复壮更新,易使山药退化。平凉山药的零余子(俗称山药豆)较多,过去全供食用。省外山药产地,有的采用零余子繁殖种薯,其繁殖系数高,还有复壮更新作用。不过,
Pingliang yam belongs to the long-column variety of Dioscorea batatas Decne, which is a precious vegetable, commonly used traditional Chinese medicine and one of export agricultural products. Yam contains carbohydrate 10-30%, protein 2-4%, is an important strong supplements. Also contains cortisone, rheumatoid arthritis and other diseases. The local history has always been the use of yam faucet breeding method, the reproductive coefficient of less than 1; also useful Yam cut section reproduction, reproductive coefficient of up to 3 to 5, but the high cost, rarely used. These two methods can not be rejuvenated, easy to yam degradation. Pingliao yam more than a child (commonly known as yam bean) more in the past all for food. Provincial yam origin, and some use more than sub-breeding seed potato, its high breeding coefficient, as well as rejuvenation update. but,