Effects of Long-term Fertilization on Tobacco-planting Soil,Yield and Quality of Flue-cured Tobacco
In order to establish scientific fertilization system and achieve the sustainable utilization of tobacco-planting soil,a long-term experiment was conducted to explore the effects of different fertilization modes on tobacco-planting soil,yield and quality of flue cured tobacco.Results:Fertilization especially the combined application of (MCF)chemical and organic fertilizers could significantly enhance tobacco yield and high middle tobacco proportion,and the nutrients of nitrogen and potassium in tobacco leaves.Meanwhile,the Schmuck value and nitrogen-nicotine ratio were significantly decreased.Compared with the initial soil and CK(without fertilization),long term fertilization significantly decreased soil pH value,which was a little higher in MCF than in CF (pure chemical fertilizers);Additionally,soil available phosphorus content was significantly enhanced in CF and MCF.The organic matter content was significantly decreased in CF and enhanced in some degree in MCF compared with the initial soil,which was significantly higher in MCF than in CF;Soil total nitrogen content in MCF was enhanced in some degree,and available nitrogen content was significantly enhanced compared with CK and CF;Compared with CK,the soil microbial biomass carbon(SMBC) content of CF increased in certain extent,while the soil microbial biomass nitrogen(SMBN) content of CF decreased a little,MCF enhanced the contents of SMBC and SMBN sharply,in which the SMBC content was enhanced significantly.All above indicated that long-term combined application of chemical and organic fertilizers could not only realize the sustainable yield and quality increase of flue-cured tobacco,but also slow down the soil acidification,increase the organic matter content in soil,optimize the soil microbial community structure and perfect the soil nutrients supply.
flue-cured tobaccolong-term fertilizationyellow soilyield and qualityeconomic traits
NETL
NSTL
万方数据
维普
