Effects of background fertilization followed by co-application of two kinds of bacteria on soil nutrient content and rice yield in Northeast China
作者机构：College of Resources and EnvironmentNortheast Agricultural UniversityHarbin 150030China Heilongjiang Provincial Ecological Meteorological CenterHarbin 150030China Institute of Natural Resources and EcologyHeilongjiang Academy of SciencesHarbin 150040China College of EngineeringNortheast Agriculture UniversityHarbin 150030China
出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)
年 卷 期：2020年第13卷第2期
页 面：154-162页
核心收录：
学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学]
主 题：microbial inoculants microbial fertilizer rice co-application Bacillus mucilaginosus Aspergillus niger nutrients
摘 要：With the improvement of living standards,people pay more and more attention to the quality and safety of *** agents are favored by the public because they can activate the nutrient supply in the soil,and reduce the residue and application amount of chemical fertilizers and *** on the conventional fertilization in the field,Bacillus mucilaginosus and Aspergillus niger were applied,Bacillus mucilaginosus was inoculated at four levels in the paddy soil in the cold region of Heilongjiang Province of *** effects of different proportions of Bacillus mucilaginosus and Aspergillus niger on the number of soil microorganisms,enzyme activity,microbial biomass,soil biochemical intensity,soil nutrient content,plant nutrient content and yield were studied,and the effects on the plant nutrient content of rice and the nutrient dynamics were *** results showed that a 2.62%-21.20%higher yield of rice obtained from co-application treatments compared with that of the control-blank ***,the highest yield obtained(10736±65 kg/hm^(2))suggested that the optimized values for the two bacteria applied were 120×10^(11) CFU/hm^(2) for Bacillus mucilaginosus and 15×10^(11) CFU/hm^(2) for Aspergillus *** mucilaginosus can decompose minerals in soil,dissolve potassium and silicon,decompose apatite and release phosphorus into *** niger can transform the phosphate which cannot be absorbed by plants into soluble phosphate which can be directly absorbed by plants by producing non-volatile *** particular,Bacillus mucilaginosus and Aspergillus niger have synergistic effect,and their combined application effect is greater than that of two bacteria ***-application promoted the release of soil soluble silicon,and then increased the silicon content of *** the same time,soil microorganism,microbial biomass,enzyme activity and biochemical activity all increased *** study provides an effective way to
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