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当前位置: 首页 > 文章 > 钝化剂处理对玉米与伴矿景天间作下植株生长及镉累积特征的影响 农业环境科学学报 2019 (9) 2103-2110
Position: Home > Articles > 钝化剂处理对玉米与伴矿景天间作下植株生长及镉累积特征的影响 Journal of Agro-Environment Science 2019 (9) 2103-2110

钝化剂处理对玉米与伴矿景天间作下植株生长及镉累积特征的影响

作  者：
陈国皓;祖艳群;湛方栋;李博;李元
单  位：
云南农业大学资源与环境学院
关键词：
镉;钝化剂;玉米;伴矿景天;间作
摘  要：
为了探讨玉米与伴矿景天间作与钝化剂处理对植株Cd吸收积累特征的影响,通过盆栽试验,将6种复配钝化剂[石海剂(LS)、石磷剂(LP)、石殖酸(LH)、海磷剂(SP)、海殖酸(SH)、磷殖酸(PH)]施用在Cd污染土壤中后种植玉米,间作超富集植物伴矿景天(Sedum plumbizincicola)进行研究.结果表明,玉米与伴矿景天间作与单作相比较,玉米单株生物量显著上升了12.2%~52.4%,玉米植株Cd含量显著降低了10.0%~38.9%,玉米Cd转运系数显著降低,伴矿景天单株生物量显著上升了20.3%~73.4%;两种种植模式中,石海剂处理下的玉米单株生物量最大,玉米茎叶中Cd含量最低,符合国家饲料卫生标准,玉米Cd累积量较对照显著降低;间作模式中,石海剂和石殖酸处理下,伴矿景天单株生物量和Cd累积量最大.石海剂+玉米与伴矿景天间作的联合修复模式可以运用在Cd污染农田土壤修复中达到边修复边生产的目的.
作  者：
CHEN Guo-hao;ZU Yan-qun;ZHAN Fang-dong;LI Bo;LI Yuan;College of Resources and Environment, Yunnan Agricultural University;
关键词：
cadmium,passivator;;maize;;Sedum plumbizincicola;;intercropping system
摘  要：
Pot experiments were conducted to study the effects of the application of six compounded passivating agents[LS(lime+sepiolite),LP(lime+calcium magnesium phosphate fertilizer), LH(lime+humic acid), SP(sepiolite+calcium magnesium phosphate fertilizer), SH(sepiolite+humic acid), PH(calcium magnesium phosophate fertilizer+humic acid)] on the growth and Cd accumulation of intercropped maize and Sedum plumbizincicolain Cd-contaminated soil. The biomass of intercropped maize was significantly higher(by 12.2%～52.4%),the Cd content of intercropped maize was significantly lower(by 10.0%～38.9%), and the Cd transport coefficient of intercropped maize was significantly lower than that with monocultured maize. The biomass of intercropped S. plumbizincicola was significantly higher(by 20.3%～73.4%)than that of monocultured S. plumbizincicola. Under the two planting systems, the biomass of maize treated with LS was the highest and the Cd content of maize shoots was the lowest; these met the criteria of national food hygiene standards. In the intercropping system with LS and LH treatments, the biomass and Cd accumulation of S. plumbizincicola were the highest. The model of LS treatment + intercropping of maize and S. plumbizincicola in heavily Cd-polluted soil could be used for agricultural production and soil remediation.

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