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《Acta Botanica Boreali-occidentalia Sinica》 2005-03
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Element Composition of Dioscorea zingiberensis and Its Relation with Soil Nutrients

LI Xiang-min~(1,2),LI Jun-chao~2,CHEN Gang~3,WEI Liu-lan~2,LI Chun-xi~4 (1 College of Life Science,Shaanxi Normal University,Xi'an 710062,China;2 Northwest Sci-Tech University of Agriculture and Forestry,Yangling,Shaanxi 712100,China;3 Forestry Technology Popularization Center of Ankang Administrative City,Ankang,Shaanxi 725000,China;4 Yam Institute of Xunyang County,Ankang,Shaanxi 725700,China)  
Elements both in dioscore plant and soil were analysed.The analysis showed that the content of each element was different between yam tuber and stem.Compared with the element contents in yam stem,Ni,Fe,P,and Al were much higher and Ca,Mg,Mn were much lower.Yam absorbs more K,Zn,Fe than other crops did the ratio of element absorption amount in yam tuber to the in stem (R2/U2) was big,There was a big difference between macro element contents in tuber (A) and stem (B),the order of microelement is the same.Yam contained (2.87%) of diosgenin.There was close relation of diosgenin content with the amount of O.M.,total N,total P,total K,available Fe and Zn.The samples with high content of diosgenin concentrated on northern slope of Hualong range of Daba mountains.
【Fund】: 陕西省科技攻关项目( 2 0 0 2 K0 4-G5 -0 3)
【CateGory Index】: S567.2
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