土壤调理剂施用对稻麦轮作区小麦产量和镉吸收的影响  

Effect of Soil Conditioner Application on Wheat Yield and Cadmium Uptake of Wheat in Rice-Wheat Rotation District

作　　者：褚军杰 郑佩君 陶娟花 张金萍 邹平[1] 刘迎夏 马进川 CHU Junjie;ZHENG Peijun;TAO Juanhua;ZHANG Jinping;ZOU Ping;LIU Yingxia;MA Jinchuan(State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products,Institute of Environment,Resource,Soil and Fertilizers,Zhejiang Academy of Agricultural Sciences,Hangzhou,Zhejiang 310021,China;Yuyao Bureau of Agriculture and Rural Affairs,Yuyao,Zhejiang 315499,China;Keqiao District Agricultural and Fishery Technology Extension Station of Shaoxing,Zhejiang Province,Keqiao,Zhejiang 312030,China;School of Environmental and Resource Sciences,Zhejiang A&F University,Hangzhou,Zhejiang 3113003,China)

机构地区：[1]农产品质量和安全生物和化学威胁管理国家重点实验室,环境资源与土壤肥料研究所,浙江省农业科学院,浙江杭州310021 [2]余姚市农业农村局,浙江余姚315040 [3]浙江省绍兴市柯桥区农业水产技术推广站,浙江柯桥312030 [4]浙江农林大学环境与资源学院,浙江杭州311300

出　　处：《麦类作物学报》2024年第3期392-398,共7页Journal of Triticeae Crops

基　　金：国家玉米产业体系项目(CARS-02-25);国家自然科学基金面上项目——抗生素降解菌土壤输入驱动的耐药组变异及机制研究(41977328)。

摘　　要：为筛选出适宜于稻麦轮作区镉(Cd)轻度污染农田小麦安全生产的土壤调理剂,对比了石灰、腐殖酸型土壤调理剂、高钙型土壤调理剂、钾镁型土壤调理剂和壳寡糖型土壤调理剂对小麦产量、土壤Cd有效性和小麦Cd吸收的影响。结果表明,与不施调理剂处理(CK)相比,土壤调理剂处理下小麦产量和土壤pH值均显著提高,增幅分别为5.05%~12.78%和6.44%~15.58%,以钾镁型土壤调理剂的效果最佳;土壤调理剂处理均可显著降低土壤有效态Cd含量,降幅为10.94%~24.13%。钾镁型土壤调理剂和腐殖酸型土壤调理剂处理下小麦植株各部位中的Cd含量均显著降低,其中籽粒Cd含量的降低与Cd从根系到茎秆、叶片到颖壳的转移系数降低紧密相关。这说明土壤调理剂对土壤酸碱平衡、Cd形态有一定的调节作用,有利于减少小麦植株对土壤Cd的吸收和累积,可增加籽粒产量。To screen the soil conditioner suitable for safe utilization of low-cadmium(Cd)contaminated farmland in rice-wheat rotation regions,this study compared the effects of lime,humic acid soil conditioner,high calcium soil conditioner,potassium-magnesium soil conditioner,and chito-oligosaccharide soil conditioner on wheat yield,soil Cd availability and wheat Cd uptake.The results showed that compared with the control with out soil conditioner(CK),soil pH and wheat yield of soil conditioner treatments were significantly increased by 5.05%-12.78%and 6.44%-15.58%,respectively,especially for the potassium-magnesium soil conditioner;all the soil conditioner treatments could significantly reduce the concentration of soil available Cd by 10.94%-24.13%.Both the potassium-magnesium and humic acid soil conditioner significantly reduced the Cd accumulation in wheat root,steam,leaves,glume and grain,and reduced grain Cd accumulation by decreasing the translocation factor between root and steam,leaves and glume.This study can provide a technical support for the safe production of wheat in low-cadmium(Cd)contaminated farmland of rice-wheat rotation regions.

关 键 词：小麦 镉 土壤修复 土壤有效态镉 

分 类 号：S512.1[农业科学—作物学] S311