刈割方式对鬼针草修复土壤镉污染的作用研究  

Effects of Mowing on the Remediation of Soil CadmiumPollution by Bidens Pilosa L.

作　　者：徐兰兰 熊明月 史应仙 聂有富 兰树华 宋洪川[1,2] 黄益宗 官会林[1,2] 黄晶心 XU Lanlan;XIONG Mingyue;SHI Yingxian;NIE Youfu;LAN Shuhua;SONG Hongchuan;HUANG Yizong;GUAN Huilin;HUANG Jingxin(School of Energy and Environmental Sciences,Yunnan Normal University,Kunming 650500,China;Yunnan Provincial Observation and Research Station of Soil Degradation and Restoration for Cultivating Plateau Traditional Chinese Medicinal Plants,Yunnan Normal University,Kunming 650500,China;Jiangchuan Agricultural Machinery and Farmland Construction Management Station,Jiangchuan 652600,China;Yongsheng Rural Energy and Environmental Protection Monitoring Station,Yongsheng 674200,China.)

机构地区：[1]云南师范大学能源与环境科学学院,云南昆明650500 [2]云南师范大学特色中药材种植土壤质量演变退化与修复云南省野外科学观测研究站,云南昆明650500 [3]玉溪市江川区农业机械和农田建设管理站,云南玉溪652600 [4]永胜县农村能源环保监测站,云南永胜674200

出　　处：《云南师范大学学报（自然科学版）》2024年第5期49-53,共5页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金资助项目(32360317);云南省教育厅科学研究基金资助项目(2024Y153).

摘　　要：为探究不同刈割方式对鬼针草修复土壤镉(Cd)污染的作用.在鬼针草一个完整的生长季内,对比了持续种植处理(种植持续整个生长季,CK)、重新种植处理(生长季内种植2轮,每轮半个生长季,X1)、刈割老叶处理(X2)、距根部30 cm刈割(X3)、刈割顶端顶芽(X4)对鬼针草生长、生物量及Cd富集能力的影响.与CK相比,X1处理鬼针草株高、直径、侧芽数和平均生长速度均显著降低(P<0.05);X3处理再生长速度和平均生长速度显著提高了34.88%、16.16%(P<0.05);X3和X4处理株高、侧芽数和生物量显著提高(P<0.05),地上生物量分别提高了62.16%、58.11%;X3、X4地上部Cd富集量分别显著提高了93.25%、77.64%(P<0.05),X3处理富集系数达到最大值2.61,因此距根部30 cm刈割对增强鬼针草提取土壤中Cd效果最好.To explore the effect of different mowing methods on the remediation of cadmium(Cd)contaminated soil by Bidens pilosa L..A complete growing season of Bidens pilosa L.was compared for the effects of five different treatments on plant growth,biomass,and Cd accumulation capacity.The treatments included continuous planting(CK),replanting(X1),mowing old leaves(X2),mowing 30 cm from the root(X3),and mowing the top buds(X4).Compared to the CK,the X1 treatment significantly reduced the plant height,stem diameter,number of lateral shoots,and average growth rate of Bidens pilosa L.(P<0.05);the X3 treatment significantly increased the regrowth rate and average growth rate by 34.88%and 16.16%(P<0.05);the X3 and X4 treatments significantly increased the plant height,number of lateral shoots,and biomass(P<0.05),with the aboveground biomass increasing by 62.16%and 58.11%respectively;the aboveground Cd accumulation in the X3 and X4 treatments significantly increased by 93.25%and 77.64%(P<0.05),and the enrichment factor in the X3 treatment reached the maximum value of 2.61.Mowing 30 cm from the root has the best effect on enhancing Bidens pilosa L.'s extraction of Cd from the soil.

关 键 词：土壤 镉污染 鬼针草 刈割 土壤修复 

分 类 号：X53[环境科学与工程—环境工程]