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《Journal of Heilongjiang Bayi Agricultural University》 2017-04
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Effect of Humic Acid on Continuous Cropping Flue-cured Tobacco Soil Properties and Production and Quality

Xiao Yao;Jiang Yuzhou;Li Di;Wang Xiaoying;Wang Peng;College of Agronomy,Heilongjiang Bayi Agricultural University;  
Potted and field culturing tests were used to study the effect of humic acid on soil enzyme activity,soil physical and chemical,tobacco yield and quality in continuous cropping tobacco.The results showed that the humic acid had significant effect on soil enzymes activity and available nutrients content,and four kinds of soil enzymes had significant positive correlation with quickacting nutrient.The 50 g·plant-1processing,four kinds of soil enzyme activity in different growth period were the strongest after transplanting,compared with controls increasing 3.43%-7.05%,13.74%-22.47%,12.00%-28.24%,4.60%-21.38% respectively.Humic acid treatment of flue-cured tobacco yield and output value were significantly higher than other treatments,compared to the conventional fertilization increased by 9.35% and 10.37%,respectively.Resoults indicated appropriate humic acid could improve soil enzymes activity and available nutrients and yield and output value.
【Key Words】: flue-cured tobacco humic acid soil enzyme activity yield
【Fund】: 黑龙江省烟草公司资助项目(有机肥对黑龙江省植烟土壤及烤烟品质影响研究:HN201202)
【CateGory Index】: S572
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