Abstract: To discover a rapid,simple and cheap method to improve soil properties,this experiment researched the effects of biological organic fertilizer (Y),microbial fertilizer (W) and humic acid fertilizer on the physicochemical property of soil,content of effective microelements,enzymatic activity and the quality of tomato in greenhouse. The results showed that each soil organic amendment did not contribute significantly to the pH value of soil,the pH value of soil was always above 7.0 during the crop growth period,and no acidification problem. After harvest,all fertilizers could reduce the level of EC except the middle level humic acid fertilizer (FM). Each fertilizer had no significantly effect on the available Mn,Zn and Fe content,only the high level humic acid fertilizer (FH) could improve available Zn content in 0-20 cm(increased 10.8%) and 20-40 cm (increased 13.2%) soil layers at full fruiting stage. The activity of urease and sucrase increased after all treatments. All treatments provided less influence on the alkaline phosphatase activity. The activity of acid phosphatase and catalase was relatively affected by microbial fertilizer. All treatments increased the contents of soluble solid,soluble sugar,titratable acid and vitamin C,the middle level humic acid fertilizer improved the sugar-acid ratio among treatments. Above all,soil organic amendment could effectively improve the soil characteristics and tomato quality in greenhouse.

Key words: Soil amendment, Effectively improve, Sodium phenol colorimetry, Effective microelements, Soil enzymatic activity

CLC Number: 

• S626.5