Effects of Maize Straw Returning on Soil Microbial Biomass Carbon and Enzyme Activities Under the Mode of Planting and Returning

doi:10.13870/j.cnki.stbcxb.2017.04.041

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Effects of Maize Straw Returning on Soil Microbial Biomass Carbon and Enzyme Activities Under the Mode of Planting and Returning

更新时间：2025-03-12

- Effects of Maize Straw Returning on Soil Microbial Biomass Carbon and Enzyme Activities Under the Mode of Planting and Returning
- Vol. 31, Issue 4, Pages: 259-263(2017)
- 作者机构：
  
  吉林农业大学资源与环境学院,长春,130118
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2017.04.041
  CLC： S151.9
- Published：2017
- 稿件说明：
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Effects of Maize Straw Returning on Soil Microbial Biomass Carbon and Enzyme Activities Under the Mode of Planting and Returning[J]. 2017, 31(4): 259-263.
DOI：

Effects of Maize Straw Returning on Soil Microbial Biomass Carbon and Enzyme Activities Under the Mode of Planting and Returning[J]. 2017, 31(4): 259-263. DOI： 10.13870/j.cnki.stbcxb.2017.04.041.

摘要

在种还分离模式下采用尼龙网袋法对玉米秸秆还田进行田间原位模拟，比较不同秸秆还田量在不同还田深度下对土壤总有机碳、微生物量碳、纤维素酶活性和过氧化氢酶活性的影响。试验设置秸秆还田量0（R0），0.44%（R1），0.88%（R2）和1.32%（R3）4个水平和3个还田深度0—15，15—30，30—45 cm交叉处理。结果表明：还田1年时，在0—15 cm土层，土壤总有机碳、微生物量碳、纤维素酶活性和过氧化氢酶活性均随秸秆还田量增加而提高，且R3处理提升效果最显著，分别达到30.98%，101.16%，172.72%，5.40%；在15—30 cm土层，秸秆还田处理的土壤总有机碳、微生物量碳含量和过氧化氢酶活性高于R0处理，但R1、R2、R3之间无显著性差异，纤维素酶活性随秸秆还田量增加而变大；在30—45 cm土层，R2、R3处理的土壤总有机碳、微生物量碳含量和纤维素酶活性显著高于其他处理，各处理的过氧化氢酶活性并无显著差异。还田2年与还田1年相比，各处理的土壤总有机碳、微生物量碳、纤维素酶活性均降低，降低幅度分别为8.59%～35.36%，6.74%～29.16%，6.18%～31.72%，但过氧化氢酶活性呈增加趋势，以R3增幅最大，随土层加深，提升幅度为14.14%，10.14%，12.11%。说明在种还分离模式下可以高量秸秆还田，并可有效改善土壤肥力。

Abstract

In order to compare the effects of different straw returning rates on soil total organic carbon

microbial biomass carbon

cellulase activity and catalase activity at different soil depths

an in-situ experiment was conducted in a separate mode of planting and returning. The experiment was conducted with four levels of returning amount

i.e. 0% (R0)

0.44% (R1)

0.88% (R2) and 1.32% (R3)

and three different returning depths

i.e. 0—15

15—30

and 30—45 cm. The result showed that returning for 1 year

soil organic carbon content

microbial biomass carbon content

cellulase activity and catalase activity in 0—15 cm soil layer increased with the increasing amount of straw

and those under R3 treatment had the greatest significantce

which increased by 30.98%

101.16%

172.72%

and 5.40%

respectively. In 15-30 cm soil layer

the contents of total organic carbon

microbial biomass carbon and catalase activity in soil treated with straw were higher than those in R0

but there were no significant differences between R1

while cellulase activity increased with the amount of straw returning. In 30—45 cm soil layer

soil organic carbon content

microbial biomass carbon content and cellulase activity of R2 and R3 were significantly higher than those of other treatments

and no significant differences were in catalase activity of all treatment. Compared with returning for 1 year

the total organic carbon content

soil microbial biomass carbon and cellulase activity during returning for 2 years decreased

with the deree of 8.59%～35.36%

6.74%～29.16%

and 6.18%～31.72%

but catalase activity increased

the largest increase occured in R3 (with the increase of soil depth

the increase rate of 14.14%

10.14%

and 12.11%). This study indicates that in the case of separate mode of planting and returning

the high amount of straw can be returned to the field

and also the soil fertility can be improved effectively.

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GUO Tian1,2,HE Bing-hui1,JIANG Xian-jun1,MA Yun1,WU Yong3,XIANG Ming-hui4,CHEN Yun1,TANG Chun-xia1(1.College of Resources and Environment,Southwest University,Key Laboratory of Eco-environments in Three Gorges Reservoir Region,Ministry of Education,Chongqing 400715,2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau,Yangling,Shaanxi 712100,3.Soil and Water Conservation Office of Anju District of Suining City,Suining,Sichuan 629006,4.Soil and Water Conservation Experimental ..

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LIAO Min1,PENG Ying1,CHEN Yi2,3,XIE Xiao-mei1,WU Chun-yan2,TANG Xu2,LIU Yu-xue2,YANG Sheng-mao2,3(1.Department of Resource Science,College of Environmental and Resource Science,Zhejiang University,Hangzhou 310058,2.Institute of Environmental Resources and Soil Fertilizer,Zhejiang Academy of Agricultural Science,Hangzhou 310021,3.Key Field Station for Monitoring of Eco-Environment of Paddy Soil in Hangzhou,the Ministry of Agriculture,Haining,)

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