磁性凝胶颗粒的制备方法及其对营养生长期水稻镉积累的影响  

Preparation Method of Magnetic Gel Particles and Its Effect on Cadmium Accumulation in Rice at Vegetative Period

作　　者：雷静[1] 唐翠荣 康吉利 蓝唯[3] 李冬桂 龙凌云[3] 李慧敏[3] LEI Jing;TANG Cuirong;KANG Jili;LAN Wei;LI Donggui;LONG Lingyun;LI Huimin(Agricultural and Animal Husbandry Industry Development Research Institute,Guangxi University,Nanning,Guangxi 530004,China;Soil and Fertilizer Station of Guangxi Zhuang Autonomous Region,Nanning,Guangxi 530007,China;Guangxi Subtropical Crops Research Institute,Nanning,Guangxi 530001,China)

机构地区：[1]广西大学农牧产业发展研究院,广西南宁530004 [2]广西壮族自治区土壤肥料工作站,广西南宁530007 [3]广西壮族自治区亚热带作物研究所,广西南宁530001

出　　处：《农业研究与应用》2021年第5期23-32,共10页Agricultural Research and Application

基　　金：广西直属公益性科研院所基本科研业务费专项(桂热研201608)。

摘　　要：利用海藻酸钠、Fe_(3)O_(4)纳米颗粒为材料,制备磁性凝胶颗粒,通过土壤吸附试验,水稻盆栽试验,探讨其对土壤有效态镉浓度的影响,以及对水稻幼苗积累镉的影响,为水稻安全生产提供理论参考依据。结果表明,磁性凝胶颗粒可降低土壤中有效态镉浓度,土壤有效态镉浓度从4.41 mg/kg降低到0.81 mg/kg,降低率为81.57%。磁性凝胶颗粒能有效降低水稻根系、茎叶、根表铁膜中的镉浓度,降低率分别为58.70%、59.71%、62.33%;能有效提高水稻根系的铁浓度,提高率为100.50%。Magnetic gel particles were prepared by using sodium alginate and Fe_(3)O_(4) nanoparticles as materials,and its influence on the available Cd concentration in soil and Cd accumulation in rice seedlings was discussed through soil adsorption test and rice pot experiment,so as to provide a theoretical reference for rice safety production.The results showed that magnetic gel particles could reduce soil available Cd concentration from 4.41mg/kg to 0.81mg/kg,with a reduction rate of 81.57%;could effectively decrease Cd concentration in rice root,stem and leaf,and root iron plaque,and the decrease rates were 58.70%,59.71%,62.33%,respectively;could effectively increase iron concentration in rice root,and the increase rate was 100.50%.

关 键 词：磁性凝胶 镉 土壤 水稻 吸附 

分 类 号：S511[农业科学—作物学]