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中国农学通报

中国农学通报 ›› 2016, Vol. 32 ›› Issue (22): 76-83.doi: 10.11924/j.issn.1000-6850.casb15120167

所属专题： 园艺

• 林学 园艺 园林 • 上一篇    下一篇

桑树品种间重金属镉的分布与富集规律研究

蒋诗梦,颜新培,龚 昕,黄仁志,贾超华,龙唐忠,蒋勇兵,秦志雄,罗 军   

  1. (湖南省蚕桑科学研究所,长沙 410127）
  • 收稿日期:2015-12-30 修回日期:2016-01-27 接受日期:2016-02-25 出版日期:2016-08-09 发布日期:2016-08-09
  • 通讯作者: 颜新培
  • 基金资助:
    湖南省科技支撑计划项目“镉超标农田桑树生态利用与产业化示范”(2015SK2041)。

Distribution and Enrichment Regularity of Cadmium of Different Mulberry Varieties

Jiang Shimeng, Yan Xinpei, Gong Xin, Huang Renzhi, Jia Chaohua, Long Tangzhong, Jiang Yongbing, Qin Zhixiong, Luo Jun   

  1. (The Sericultural Research Institute of Hunan Province, Changsha 410127)
  • Received:2015-12-30 Revised:2016-01-27 Accepted:2016-02-25 Online:2016-08-09 Published:2016-08-09

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摘要： 为探究桑树品种间重金属镉的分布与富集规律，选择‘农桑14号’、‘强桑1号’、‘粤桑11号’3个桑品种，并设置15000株/hm2、30000株/hm2、45000株/hm2的栽植密度在镉超标农田上开展试验。根据样品检测与统计分析的结果得出：从土壤中吸收的镉50%左右分布在桑树根部，其次为分枝、主茎和叶，桑树品种与栽植密度及其互作对各取样部位（除桑叶外）的镉总量均有显著影响。在镉含量为2.93 mg/kg的农田中，15000株/hm2栽植模式下的‘粤桑11号’品种富集镉能力最强。桑树对镉的富集系数为0.107，桑树对镉的转移系数为0.243，两者均不受桑树品种与栽植密度及其互作的影响。

关键词: 绿洲边缘, 绿洲边缘, 不同生境, 沙拐枣, 种群特征

Abstract: In order to identify the distribution and enrichment regularity of cadmium among different mulberry varieties, ‘Nongsang 14’, ‘Qiangsang 1’ and ‘Yuesang 11’ were planted on cadmium-excessive farmlands with the density of 15000, 30000 and 45000 plants/hm2. According to the results of sample testing and statistical analysis, about 50% of the cadmium absorbed from the soil was distributed in mulberry root, followed by that in branches, stems and leaves, respectively. The cadmium distribution in the sampling parts (except for the leaves) was significantly affected by the mulberry variety, planting density and their interaction. ‘Yuesang 11’ planted on the farmland with cadmium concentration of 2.93 mg/kg and planting density of 15000 plants/hm2 had the strongest enrichment capability. In addition, the cadmium enrichment coefficient (EC) of mulberry was 0.107, and the cadmium transfer factor (TF) of mulberry was 0.243, both were insusceptible to the mulberry variety, planting density and their interaction.