不同生物质炭对玉米种子萌发及幼苗根系形态特征的影响  

Biochar Affects Seed Germination and Root Morphological Characteristics of Maize

作　　者：许唯 胡帅栋 陆鑫华 宋余泽 胡仪 Xu Wei;Hu Shuaidong;Lu Xinhua;Song Yuze;Hu Yi(Horticultural Research Institute of Jiaxing Academy of Agricultural Sciences,Jiashan Zhejiang 314100;Shengzhou Agriculture and Forestry Technology Popularization Center,Shengzhou Zhejiang 312400;School of Environmental and Resource Sciences,Zhejiang Agriculture&Forestry University,Hangzhou 311300;College of Agronomy and Biotechnology,China Agricultural University,Beijing 100193)

机构地区：[1]嘉兴市农科院园艺研究所,浙江嘉善314100 [2]嵊州市农林技术推广中心,浙江嵊州312400 [3]浙江农林大学环境与资源学院,杭州311300 [4]中国农业大学农学院,北京100193

出　　处：《中国农学通报》2019年第29期20-24,共5页Chinese Agricultural Science Bulletin

基　　金：浙江省科技厅创新团队项目“农林废弃物使用与土壤培肥增汇技术研发”(2010R50030-10)

摘　　要：为探讨生物质炭对玉米种子萌发及幼苗生长的影响,以‘美玉8号’(加甜糯)为试验材料,在光照培养条件下利用对照、500℃制取的竹叶生物质炭、烟秆生物质炭和小麦秸秆生物质炭进行萌发培养试验,分别对玉米种子发芽势、发芽率、发芽指数,以及幼苗根系形态等指标进行测定。结果表明:生物质炭对玉米种子萌发无显著影响,而不同生物质炭对玉米幼苗根系发育具有显著抑制作用;竹叶、烟秆和小麦秸秆生物质炭对玉米根长抑制率分别为14.4%、59.7%和37.3%。本试验可初步得出结论:在生物质炭条件下,玉米种子萌发的敏感性比幼苗根系伸长小;而根系抑制率可作为生物质炭对植物毒性评估的一种良好的测试方法。To study the effects of biochar on seed germination and seedling growth,‘Meiyu 8’was used as experimental material for germination culture experiment.The seeds were cultured under light condition,the control,bamboo leaf biochar,tobacco stalk biochar and wheat straw biochar(biochar produced under 500℃)were set up.The germination potential,germination rate,germination index,and root morphology of the seedlings were measured respectively.The results showed that biochar had no significant effect on maize seed germination,but had significant inhibitory effect on the root development of maize seedlings.The inhibition rate of bamboo leaf,tobacco stalk and wheat straw biochar on maize root length was 14.4%,59.7%and 37.3%,respectively.It is concluded that:under biochar application,the sensitivity of maize seed germination is less than the root elongation of seedlings;and the root inhibition rate could be used as a good test method for the assessment of phytotoxicity of biochar.

关 键 词：生物质炭 玉米(Zea mays L.) 萌发 根系形态 

分 类 号：S156[农业科学—土壤学]