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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (17): 274-281.

• 农学 农业基础科学 • 上一篇    下一篇

热带亚热带地区8种旋花科植物的元素含量分析

黎春花1,2,刘国道1   

  • 收稿日期:2009-03-27 修回日期:2009-04-25 出版日期:2009-09-05 发布日期:2009-09-05

Li Chunhua1,2，Liu Guodao1   

  • Received:2009-03-27 Revised:2009-04-25 Online:2009-09-05 Published:2009-09-05

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摘要：

摘要：对热带亚热带地区8种18个旋花科植物样的元素含量特征进行了分析，结果显示，平均含量＞1%的有N、K、Ca，0.2～0.5%的有S、Mg、P，0.01～0.05%的有Fe、Mn，＜0.01%的有Zn、B、Cu、Hg、Pb、As、Cr、Mo、Cd，其含量顺序为N＞K＞Ca＞S＞Mg＞P＞Fe＞Mn＞Zn＞B＞Cu＞Hg＞Pb＞As＞Cr＞Mo＞Cd；参考全国有机肥料品质四要素分级标准和全国有机肥料品质总分分级标准对参试样品的肥用价值进行评价，18个参试样品富含N、K，而P的含量居中下等水平，其中云南多花山猪菜达到一级标准；6个常量元素的变异系数在0.30～0.60之间，微量元素中除B、Cu的变异系数较低外（分别为0.40和0.48），其余均在0.70以上，其中Pb、Mo、Cd的变异系数超过了1.00（分别为1.13、1.32、1.54）；N与P，Ca与S，Cr与Mo、Cd，Pb与Mo、Fe间呈显著的正相关，K与B，Pb与Cr、Mo间呈极显著的正相关, 而As与Cu,N与Mn，P与Cd、Mn间呈显著的负相关；72%的植物中B的含量极低，云南多花山猪菜和云南山猪菜中Cu的含量极低，广西百色市掌叶山猪菜的Mo含量极低（未检测出），50%的植物中Mn的含量超标；用测试植物的元素含量与一般植物元素含量范围上限比值分析植物污染量时, 云南山猪菜、海南厚藤及虎脚牵牛的As含量，4个植物样的Cd含量，约61%的Cr含量，空心菜的Zn含量，云南掌叶山猪菜和广西五爪金龙的Pb含量比值大于1。

关键词: 水分胁迫, 水分胁迫, 复水, 转基因甘薯, 抗氧化防御系统

Abstract:

Abstract : Elements analysis of 8 species of Convolvulaceae in tropical and subtropical areas showed that the mean concentration of N, K and Ca were higher than 1%, S, Mg, P ranged between 0.2 and 0.5%, Fe, Mn ranged between 0.01 and 0.05%, Zn, B, Cu, Hg, Pb, As, Cr, Mo and Cd were less than 0.01%,　The mean element concentration of 18 plants followed an order asN> K> Ca> S> Mg> P> Fe> Mn > Zn> B> Cu> Hg> Pb> As> Cr> Mo> Cd; The variation coefficient of 6 major elements ranged between 0.30 to 0.60;in addition to B, Cu, with low variation coefficient of 0.40 and 0.48 respectively, the variation coefficient of the rest trace elements were higher than 0.70, in particular, the variation coefficient of Pb, Mo, Cd were higher than 1.00 (1.13,1.32,1.54 respectively); The correlation analysis of element concentration in plant revealed that N and P, Ca and S, Cr and Mo, Cd, Pb and Mo, Fe positively correlated at the level of 0.05, K and B, Pb and Cr, Mo positively correlated at the level of 0.01,while As and Cu, N and Mn, P and Cd, Mn negatively correlated at the level of 0.05;72% of the plants lacked B, Merremia boisiana and Merremia umbellata in Yunnan lacked Cu , Merremia vitifolia in Baise City of Guangxi lacked Mo (not detected), while Mn in 50% of 18 plants was overhigh; Defining the degree of pollution as the ratio of element concentration of test plants and the general scope, As concentration of Merremia umbellate in Yunnan, Ipomoea pes-caprae in Hainan and Ipomoea pes-tigridis,Cd concentration of 4 plants, Cr concentration of 61% of 18 plants,Zn concentration of Ipomoea aquatica, Pb concentration of Merremia vitifolia in Yunnan and Ipomoea cairica in Guangxi to which were higher than 1.