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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (33): 67-72.

所属专题： 生物技术

• 农学 农业基础科学 • 上一篇    下一篇

寒地农田黑土酶活性的季节动态

岳中辉 张兴义 田宇 隋跃宇 陈渊 刘宝林   

  • 收稿日期:2011-06-13 修回日期:2011-09-30 出版日期:2011-12-25 发布日期:2011-12-25
  • 基金资助:

    国家科技支撑计划项目;黑龙江省教育厅科学技术研究项目;哈尔滨师范大学青年学术骨干资助计划

Seasonal Dynamic of Soil Enzyme Activity in Cold Black Farmland

  • Received:2011-06-13 Revised:2011-09-30 Online:2011-12-25 Published:2011-12-25

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摘要：

为了探讨寒地农田黑土酶活性在作物生育期内的变化规律，在黑龙江省双城市选择了4个玉米生长的黑土样地，对其过氧化氢酶、磷酸酶、脲酶、转化酶的季节动态进行研究。结果表明，过氧化氢酶活性在生长季内呈现先降低后升高再降低的趋势，其峰值出现在抽雄吐丝期；磷酸酶、脲酶活性先升高后降低，峰值出现在拔节期；转化酶活性在玉米生育期内都呈现下降的趋势，酶活性在苗期最高。相关分析结果表明，4种酶活性和土壤碳氮的转化没有显著的相关性。

关键词: 蛋白含量, 蛋白含量, 酶, 多糖含量, 凝集素

Abstract:

Seasonal dynamic of catalase, phosphatase, urease, invertase activity of four black farmland areas with maize growth in Shuangcheng City in Heilongjiang Province was analyzed. The results showed that four enzyme activities differed during maize growth. Catalase activity increased firstly and then reduced steady, and finally increased, its peak appeared in the tasseling-silking stage. Phosphatase, urease activity increased at first, then decreased, its peak value was in the jointing stage. Invertase activity in maize growth period showed a downward trend, while enzyme activity was the highest in the seedling stage. Correlation analysis results indicated that there were no significant correlations between four enzyme activities and soil carbon nitrogen nutrient.