Effects of Optimizing Fertilization Regulation on Agronomic Characters,Yield and Quality of Continuous Cropping Flue-cured Tobacco
To explore the effects of fertilization on the growth,development,and yield and quality of flue-cured tobacco in different continuous cropping years of tobacco fields in Zhaoyang tobacco area,it was conducted by a small-scale field comparison experiment for optimization fertilization control.The continuous cropping fields of 3,6,9 years,and rotation were treated with 30％compound fertilizer+potassium chloride by hole application,70％compound fertilizer by circular application,and topdressing with potassium nitrate,potassium sulfate and magnesium sulfate in resettling stage.The CK in same field were manured with compound fertilizer by circular+topdressing with potassium nitrate and potassium sulfate in resettling stage.The results showed that the regulation treatment of optimizing fertilization could improve the agronomic traits of tobacco plants in continuous cropping tobacco fields,enhance the resistance of flue-cured tobacco,reduce disease occurrence,increase yield,output value,average price,and proportion of top grade tobacco,and improve the coordination of chemical components in initial flue-cured tobacco leaves.
flue-cured tobaccooptimize fertilizationcontinuous croppingagronomic charactersyield and quality
万方数据
维普
