| 李倩,张睿,贾志宽.玉米旱作栽培条件下不同秸秆覆盖量对土壤酶活性的影响[J].干旱地区农业研究,2009,27(4):152~154 |
| 玉米旱作栽培条件下不同秸秆覆盖量对土壤酶活性的影响 |
| Effect of different amount of straw mulching on soil enzyme activities in dry land |
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| DOI：10.7606/j.issn.1000-7601.2009.04.29 |
| 中文关键词: 春玉米 秸秆覆盖 土壤酶活性 |
| 英文关键词:spring maize straw mulching soil enzyme activities |
| 基金项目:“十一五”国家科技支撑课题“农田集雨保水关键技术研究”（2006BAD29B03） |
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| 中文摘要: |
| 通过玉米旱作栽培条件下秸秆覆盖栽培定位试验,研究了不同秸秆覆盖量对土壤酶活性的影响。结果表明:秸秆覆盖可使土壤酶活性增加，蔗糖酶和碱性磷酸酶活性在9 000 kg/hm2覆盖量下达到最高，在0～20 cm层蔗糖酶和碱性磷酸酶活性分别比对照(覆盖量0 kg/hm2)增加46.9%和9.0%，脲酶活性在13 500 kg/hm2覆盖量下最高，且在0～20 cm层脲酶活性较对照增加了3.9倍；脲酶、蔗糖酶和过氧化氢酶活性
均随土层的加深而降低，而碱性磷酸酶活性各层间差异不显著。 |
| 英文摘要: |
| Field fixed position experiments were conducted to study the effect of different amount of straw covering on soil enzyme activitie
s in Heyang Country of Shaanxi Province. The results showed that: Straw covering could accelerate soil enzymatic activities, in the layer between 0 cm and 20 cm the activities of invertase and alkaline phosphatase were 46.9% and 9.0% higher respectively than that in the control and reached the maximum when the fields were mulched with 9 000 kg/hm2 of maize straw; Urease activity reached the maximum when the fields were mulched with 13 500 kg/hm2 of maize straw，and urease activity in the surface increased by 3.6 times compared to the control； With the increase of soil depth, the activities of urease, invertase and catalase reduced, and the difference of alkaline phosphatase activity in different levels was not significant. |
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