Field experiments were carried out to investigate the effect of different humic acid fertilizer levels on the microorganism quantities in rhizosphere soil,activities of soil enzymes and qualities of tobacco leaves in Jiaxian County of Henan province in 2006-2007.The results showed that the quantities of soil bacteria,fungi,actinomyces,phosphate-degrading bacteria,potassium-degrading bacteria and aminate-degrading bacteria,the activities of soil sucrase,urease and phosphatase,and the qualities of tobacco leaves were higher in humic acid treatment than in the control.Humic acid fertilizer levels had closely positive relations with the mount of actinomyces and aminate-degrading bacteria,and had negative relations with the contents of nicotine and starch in tobacco leaves.This indicated that applying 750 kg/ha of humic acid fertilizer was the best.
YE Xie-feng
,
LING Ai-fen
,
ZHANG Bin
,
LIU Xu-feng
,
LI Yan-tao
,
LIU Guo-shun
. Effect of Humic Acid Fertilizer on Soil Properties and Leaf Qualities of Tobacco[J]. Acta Agriculturae Boreali-Sinica, 2009
, 24(5)
: 170
-173
.
DOI: 10.7668/hbnxb.2009.05.035
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