Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (36): 54-60.doi: 10.11924/j.issn.1000-6850.casb18070097

Special Issue: 烟草种植与生产

Previous Articles     Next Articles

Response of Tobacco Planting Rhizosphere Soil Biological Activities to Biochar Combined with Compound-organic-bacteria-fertilizer

  

  • Received:2018-07-21 Revised:2018-09-08 Accepted:2018-11-25 Online:2019-12-26 Published:2019-12-26

Abstract: The aim is to provide a basis for the reasonable application of biochar and compound-organicbacteria- fertilizer (COBF) in tobacco- planting soil. Based on the same amount of compound fertilizer application, six treatments were set up. Soil was sampled during the key tobacco growth stage (i.e. 30, 60, and 90 days after transplanted). The soil sample was analyzed for the effect of biochar and COBF on soil microorganisms’activities. The results showed that the sucrase activity in soil was significantly improved with T2 treatment in the whole growth period. The urease activity in soil under T2 and T3 treatments were significantly promoted attheearly growth stage (30d), and the urea seactivity was 0.74mg/(g·d)and0.75mg/(g·d), respectively. The microbial biomass carbon (SMBC, 810.09 mg/kg) and microbial biomass carbon entropy were improved under T2 treatment. The microbial biomass nitrogen (SMBN) and SMBN/TN were improved under T3 treatment during the whole tobacco growth period. The bacteria, fungi and actinomyce population were increased by COBF application. The highest population of bacteria and actinomyce appeared under T2 treatment during the whole tobacco growth period. Generally, in the central area of Henan Province, the application of COBBF and 60% COBBF combined with 40% biochar are the optimal practice to improve the soil microbial environment and fertility.

CLC Number: