| Effect of biogas residues on soil enzyme activity of red Fuji apple orchards |
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| DOI：10.7606/j.issn.1000-7601.2007.06.36 |
| Key Words: soil enzyme fertilizer soil nutrient black soil |
| Author Name | Affiliation | | XU Wei-na | The Northwest Station of Biogas Products and Equipment Quality Test Center of the Chinese Ministry of Agriculture Northwest A＆F University,Yangling,Shaanxi 712100 | | QIU ling | The Northwest Station of Biogas Products and Equipment Quality Test Center of the Chinese Ministry of Agriculture Northwest A＆F University,Yangling,Shaanxi 712100 | | YANG Bao-ping | Research Center for Agricultural in Arid and Semiarid Areas Northwest A＆F University,Yangling,Shaanxi 712100,China | | NIE Jun-feng | Research Center for Agricultural in Arid and Semiarid Areas Northwest A＆F University,Yangling,Shaanxi 712100,China | | WANG Jun-peng | Research Center for Agricultural in Arid and Semiarid Areas Northwest A＆F University,Yangling,Shaanxi 712100,China |
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| Abstract: |
| The soil enzyme activities were studied after biogas residues applied. The activity of 4 soil enzymes were measured at the ecotypic orchard station of Northwest A&F University,and the result showed that the activity of 4 chief soil enzymes varied,including urease,phosphatase,catalase and sucrase.Except sucrase,the activity of other soil enzymes of biogas residues in household biogas digester was greater than biogas residues in project biogas digester.The effect of urease and catalase activities of biogas residues in household digester on organic matter were significantly positive,the same as that of urease and catalase activities of biogas residues in project digester on organic matter.The results obtained through the correlation,path and principal component analysis showed that that soil urease,catalase and sucrase using biogas residues in household digester and soil sucrase using biogas residues in project digester could all be as a comprehensive index of soil fertility.Soil fertility could be evaluated objectively by principal component analysis. |
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