Using chicken manure biochar organic fertilizer as the material,the effects of different dosage and biochar application on the growth,development,and quality of Shangluo flue-cured tobacco were studied,in order to provide a theoretical basis for reducing the cost of using organic fertilizer in Shangluo tobacco area.In 2022,a community experiment was conducted on the application technology of chicken ma-nure biochar organic fertilizer in Luonan County,Shangluo City,Shaanxi Province.Six treatments were set up:T1[conventional fertilization+commercial chicken manure(450 kg/hm2)],T2[conventional fertilization+commercial chicken manure(900 kg/hm2)],T3[conventional fertilization+commercial chicken manure(1050 kg/hm2)],N1[conventional fertilization+70 chicken manure/30 biochar(750 kg/hm2)],N2[conventional fertilization+80 chicken manure/20 biochar(750 kg/hm2)]and N3[conventional fertilization+90 chicken manure/10 bio-char(750 kg/hm2)],with CK0(conventional fertilization,no organic fertilizer)and CK1(conventional fertilization+tobacco company set or-ganic fertilizer)as controls.The results showed that chicken manure biochar organic fertilizer could significantly improve the agronomic traits and disease resistance of tobacco plants;chicken manure biochar organic fertilizer increased the material accumulation of tobacco plants and enriched their organic elements;chicken manure biochar organic fertilizer significantly improved the economic traits of flue-cured tobacco.The combination of chicken manure and biochar was beneficial for improving the yield and quality of Shangluo flue-cured tobacco,among which N2 treatment[conventional fertilization+80 chicken manure/20 biochar(750 kg/hm2)]has the best effect on improving the growth and develop-ment of Shangluo flue-cured tobacco.
BiocharOrganic fertilizerTobaccoGrowth and developmentProduction quality
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