沈阳农业大学学报2011，Vol.42Issue(5)：521-526,6.
生物炭对棕壤大豆根际微生物的影响
Effect of Biochar on Soybean Rhizosphere Microbes From Brown Earth Soil
摘要
Abstract
To investigate the impact of biochar on soybean rhizosphere population, five biochar application rates were applied in soybean field and samples were collected on seedling stage, blooming stage, bearing pod stage, seed filling stage and mature stage. Dynamic variation of bacteria, fungi and actinomycetes population, soil pH and water holding capacity were studied. Meanwhile, allocation of microbes in biochar particle and soil particle was observed. Results indicated that in most stages, biochar improved rhizosphere bacteria population with 94.9% mostly. Fungi and actinomycetes number decreased in former four stages, with 13.6 fold and 47.2% respectively. However, to mature stage, fungi number increased 0.51 fold and actinomycetes increased 2.09%. Bacteria and fungi ratio increased mostly 70.7% on mature stage. pH went up with 5.6% for C4 relative to CK on mature stage. Compared with soil particles, more microbes in biochar particles were not observed. Through improving bacteria and fungi ratio and pH, biochar is expected to act as soil amendment on alleviating obstacles led by soybean continuous cropping.关键词
生物炭/根际微生物/土壤pHKey words
biochar/ microbes/ rhizosphere/ soil pH分类
农业科技引用本文复制引用
孙大荃,孟军,张伟明,黄玉威,管学超,陈温福..生物炭对棕壤大豆根际微生物的影响[J].沈阳农业大学学报,2011,42(5):521-526,6.基金项目
辽宁工程技术研究计划基金项目(2011402021) （2011402021）
院士专项基金 （）
