农业机械学报2017，Vol.48Issue(4)：265-270,341,7.DOI:10.6041/j.issn.1000-1298.2017.04.034
生物炭对温室黄瓜根际土壤真菌丰度和根系生长的影响
Effect of Biochar on Fungal Abundance of Rhizosphere Soil and Cucumber Root Growth in Greenhouse
摘要
Abstract
The cucumber of solar greenhouse was selected to study the effect of biochar of corn straw on fungal abundance of rhizosphere soil and root growth of cucumber in fruiting period.The influence mechanism was found by the test.In the test,treatments were amounts of 20 t/hm2,40 t/hm2 and 60 t/hm2 of biochar which were respectively applied to the soil of solar greenhouse.The results showed that root number,root volume and root activity were improved in various degrees,the fungal abundances of Ascomycota,Zygomycota were increased significantly,and the fungal abundances of Basidiomycota,Chytridiomycota and Glomeromycota were promoted but the proportion of hybrid bacterium was reduced greatly,when the amount of biochar was 20 ～ 60 t/hm2 in fruiting period of cucumber.The results also showed that the fungal abundances of Incertae sedis 27,Chaetomiaceae,Microascaceae,Lasiosphaeriaceae,Pseudeurotiaceae,Onygenaceae,Gymnoascaceae,Nectriaceae,lncertae sedis 3,Cephalothecaceae,Coniochaetaceae,Mortierellaceae,Glomeraceae,Bolbitiaceae and Spizellomycetaceae were improved by the application of biochar.Results showed that the effect of biochar on promoting root growth was more obvious for the fungi of Incertae sedis 27,Chaetomiaceae,Pseudeurotiaceae,Cephalothecaceae and Mortierellaceae,and these fungi promoted the root growth of cucumber by means of organizing in the root,promoting root to absorb nutrient,increasing organic matter and nutrient content,and promoting the decomposition of organic material.By comprehensive comparison,the effect of application rate of 20 t/hm2 of biochar was better than those of other treatments,and the treatment of 20 t/hm2 significantly improved the root number,root volume and root activity by 20.52％,50.73％ and 16.11％,respectively,compared with the test control in fruiting period of cucumber.关键词
黄瓜/生物炭/真菌丰度/根系生长/根际土壤/温室Key words
cucumber/biochar/fungal abundance/root growth/rhizosphere soil/greenhouse分类
农业科技引用本文复制引用
李发虎,李明,刘金泉,胡云,张清梅,赵恒栋..生物炭对温室黄瓜根际土壤真菌丰度和根系生长的影响[J].农业机械学报,2017,48(4):265-270,341,7.基金项目
国家自然科学基金项目(31660602) （31660602）
