| Response of two kinds of soil enzyme to different crops and fertilization modes in loess hilly and gully region |
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| DOI：10.7606/j.issn.1000-7601.2009.05.27 |
| Key Words: soil and water conservation tillage environmental protection soil enzyme loess hilly and gully region |
| Author Name | Affiliation | | HUANG Maolin | Northwest A＆F University, Yangling, Shaanxi 712100, China | | LIANG Yinli | Northwest A＆F University, Yangling, Shaanxi 712100, China；Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China | | CHEN Chen | Northwest A＆F University, Yangling, Shaanxi 712100, China | | SUN Cunxi | Northwest A＆F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| In order to determine a reasonable tillage system, a two-year experiment was conducted in Ansai, northern Shaanxi to test soil unease activity and sucrase activity of the fields of Glycine max L, Zea mays L, Semen Phaseoli and Solanum tuberosum Linn in the treatments of the tillage fertilizer (CF) , tilling organic manure (CM) , tillage no fertilizer (CN) ;no-till fertilizer (NF) , no-till organic manure (NM) , no-tillage no fertilizer (NN) in loess hilly and gully region.The results showed that: in the flowering stage soil unease activity of soybean and maize fields increased, but sucrase activity decreased, while those of adzuki bean and potato were opposite.After harvest time, soil unease activity and sucrase activity of maize field increased by 83%, while soil unease activity of potato, adzuki bean and soybean fields decreased, and the decreasing range was above 10% and sucrase activity increased by over 40%.From flowering stage to harvest time, no tillage reduced soil unease activity but increased sucrase activity.The effect of environmental protection was that the two kinds of soil enzyme showed high activity in the growth period but low activity after harvest, which can improve fertilizer efficiency in crop growth period and reduce the emission of greenhouse gas after harvest. |
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