| 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 |
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| 引用本文： | 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. |
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| 作者姓名： | 李倩 张睿 贾志宽 |
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| 作者单位： | 西北农林科技大学干旱半干旱地区农业研究中心,农业部旱地作物生产与,生态重点开放实验室,陕西,杨凌,712100 |
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| 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.
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| 关 键 词： | 春玉米 秸秆覆盖 土壤酶活性 |
Effect of different amount of straw mulching on soil enzyme activities in dry land |
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| LI Qian,ZHANG Rui,JIA Zhikuan.Effect of different amount of straw mulching on soil enzyme activities in dry land[J].Agricultural Research in the Arid Areas,2009,27(4):152-154. |
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| Authors: | LI Qian ZHANG Rui JIA Zhikuan |
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| Institution: | LI Qian,ZHANG Rui,JIA Zhi-kuan(Research Center of Agriculture in the Arid and Semiarid Areas,Northwest A & F University,Yangling,Shaanxi 712100,China) |
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| Abstract: | Field fixed position experiments were conducted to study the effect of different amount of straw covering on soil enzyme activities 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 rea... |
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| Keywords: | spring maize straw mulching soil enzyme activities |
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