农业环境科学学报2011，Vol.30Issue(11)：2285-2293,9.
鸡粪改良对铜尾矿基质中无机氮组分及3种豆科植物生长发育的影响
Effect of Chicken Manure-Amended on Inorganic Nitrogen Components of Copper Mine Tailings and Growing Development of Three Leguminous Species
摘要
Abstract
Substrate amendment and tolerant species selection is the key to the ecological restoration for heavy metals mining wastelands. In this work, several potted tests were performed1 using 4 kg tailings as the substrate to explore the effects of different proportions of composted chicken manure-amended on inorganic nitrogen components of copper mine tailings and growing development of three legumes( Cassia tora, Sesbania cannabina and Crotalariajuncea). In each test, four levels of compost chicken manure were added at 0 g, 8 g, 16 g, and 32 g, respectively and the treatment numbers were recorded as MAO(CK), MA8, MA16 and MA32, respectively. After adding chicken manure, the main form of available nitrogen in the tailings substrate of three legumes was nitrate nitrogen and total inorganic nitrogen content achieved 17.96-44.82 mg·kg-1. Among these, the content of ammonium nitrogen(5.31 mg·kg-1) reached the highest in the tailings substrate of C. Juncea MA32 treatment and the content of nitrate nitrogen(43.06 mg-kg"1) and total inorganic nitrogen(44.82 mg·kg-1) were the highest in the tailings substrate of C. Juncea MA 16 treatment. The highest contents for chlorophyll a, chlorophyll b and chlorophyll a+b were observed in MA16 treatment of S. Cannabina and C. Juncea. The ratios of chlorophyll a/b was 0.92-1.08 in three legumes. In the same chicken manure proportion treatment, the contents for chlorophyll a, chlorophyll b and chlorophyll a+b of C. Juncea were significant higher than those of C. Tora and S. Cannabina(P<0.05 ). Chicken manure-amended copper mine tailings substrate could promote three legumes growth by improving its height, crown width and root length, increased significantly along with the growth period extended. The plant height(94.40 cm) of C. Juncea on the 70th day was the highest and the effect to prevent tailings wind-water erosion was the best in MA32 treatment. These results demonstrate that the MA16 treatment was a suitable method for copper mine tailings amendment with chicken manure and Crotalaria juncea was found to be the favorable plant for ecological restoration of copper mine tailings.关键词
铜尾矿/基质改良/豆科植物/生态恢复Key words
copper tailings/ chicken manure amendment/ leguminous plants/ ecological restoration分类
资源环境引用本文复制引用
张宏,沈章军,阳贵德,安宗胜,孙庆业..鸡粪改良对铜尾矿基质中无机氮组分及3种豆科植物生长发育的影响[J].农业环境科学学报,2011,30(11):2285-2293,9.基金项目
环保公益性行业科研专项(201009041-02) （201009041-02）
国家高技术研究发展计划(863)资助项目(2006AA062359) （863）
