天津农业科学2025，Vol.31Issue(3)：1-5,11,6.DOI:10.3969/j.issn.1006-6500.2025.03.001
生物炭与纳米硅缓解油菜镉胁迫效应
Response of Biochar and Nano-silica in Alleviating Cadmium Stress in Rape
摘要
Abstract
To explore the mechanism of action of biochar and nano-silica on the growth of rapeseed under cadmium(Cd)stress,this study employed a pot experiment to investigate the effects of biochar and nano-silica on the growth and photosynthetic characteristics of rapeseed under Cd stress.A total of eight treatments were set up in this study:Cd(CK),2%nano-silica(S),1%biochar(1C),2%biochar(2C),4%biochar(4C),2%nano-silica+1%biochar(1CS),2%nano-silica+2%biochar(2CS),and 2%nano-silica+4%biochar(4CS).The results showed that biochar at different application rates could alleviate Cd stress and promote the growth of rapeseed.Compared with the 1%and 4%biochar treatments,the total root length,root surface area,root volume,and root fork num-ber in the 2%biochar treatment all showed significant differences.Compared with the CK treatment,the total root length,root surface area,root volume,and root fork number in the 2C treatment increased by 109.46%,113.20%,107.81%,and 126.28%respectively.The combined treatment of the two materials was more effective than the single treatments.Compared with the Cd stress treatment,the total root length,root surface area,root volume,and root fork number in the 2CS treatment increased by 144.53%,198.66%,160.46%,and 181.27%respectively.Compared with the CK treatment,the 2CS treatment had the highest contents of chlorophyll a,chlorophyll b,and carotenoids,and the differences were significant compared with other treatments.The net photosynthetic rate was ranked as CK＜1C＜S＜2C＜1CS＜4C＜4CS＜2CS,and the net photosynthetic rate was effectively improved in the 2CS treat-ment.In conclusion,both nano-silica and biochar can promote the growth of rapeseed and improve photosynthetic efficiency.The combined treatment of the two materials is more effective than the single treatments.Among the combined treatments,the 2CS treat-ment has the best promoting effect.关键词
生物炭/纳米二氧化硅/油菜/镉胁迫Key words
biochar/nano-silica/rape/Cadmium stress分类
环境科学引用本文复制引用
李海涛,张召娣,温立政,于洋,吴倩倩,卜令龙..生物炭与纳米硅缓解油菜镉胁迫效应[J].天津农业科学,2025,31(3):1-5,11,6.基金项目
山东省自然基金(2020MC088) （2020MC088）
山东省现代农业产业技术体系专项资金"山东省现代耕作制度技术体系聊城综合试验站"(SDAIT-31-10) （SDAIT-31-10）
聊城大学创新创业项目(cxcy313) （cxcy313）
