论文部分内容阅读
麻黄为多年生草本灌木,属裸子植物,是冬季羊和骆驼喜食的干草。又因其具有极高的药用价值而倍受商家青睐。近年来,由于从麻黄中提取的麻黄素在国际市场上走俏,全国各麻黄主产区对野生麻黄植物采集频繁,致使野生麻黄已满足不了市场的需求。于是人们开始大量人工栽培麻黄。 麻黄植物雌雄异株,结实率较低,种子产量也很低。因此麻黄种子奇缺且价格昂贵。据近几年的调查,麻黄种子价格曾达到每kg2000多元,几年中价格上下幅差达1000元左右。可见人工栽培麻黄用种是一笔不小的开支。另外麻黄种子空壳率高,约有10％～60％无种胚,种用质量参差不齐,给购买者带来很大的风险性。因此,在种子贸易中,无论买方或
Ephedra is a perennial herb shrub, a gymnosperm, is a hay for winter sheep and camels. Because of its high medicinal value and much favored businesses. In recent years, ephedrine extracted from ephedra has gained popularity in the international market, and wild ephedra plants are frequently collected in the main producing areas of various ephedra in the country, resulting in that the wild ephedra can not meet the market demand. So people started a lot of artificial cultivation of ephedra. Ephedra plants dioecious, low seed setting, seed yield is also very low. Therefore ephedra seeds are scarce and expensive. According to the survey in recent years, the price of ephedra seed has reached more than 2,000 yuan per kg, a few years the price difference between the upper and lower reaches 1,000 yuan. Can be seen artificial cultivation of Ephedra is not a small expenditure. In addition ephedra seed shell rate is high, about 10% to 60% of embryo-free, uneven quality of the species, to the purchaser brought great risk. Therefore, in seed trade, neither the buyer nor the buyer