摘要
[目的]明确三江平原水田土壤酶活性的演变特征。[方法]以三江平原水田土壤类型(亚类)草甸土为调查对象,采用室内分析方法,揭示土壤酶活性随水田垦殖年限的变化趋势。[结果]旱田土壤开垦为水田后,随垦殖年限的增加,草甸土水田土壤酶活性有不同程度的变化趋势;耕层草甸土脲酶活性随垦殖年限的增加均显著降低,草甸土犁底层脲酶活性在垦殖为水田后降低;随垦殖年限增加,草甸土垦殖为水田后磷酸酶活性在各层均表现降低趋势;草甸土过氧化氢酶活性在垦殖为水田后犁底层和心土层表现降低趋势,而耕层有增加趋势;草甸土垦殖为水田后转化酶活性在耕层和犁底层降低,在心土层上升。[结论]草甸土在垦殖为水田后土壤酶活性演变速率不同。
[Objective]To clarify the evolution characteristics of soil enzyme activity in paddy field in Sanjiang Plain.[Method]The soil type(sub-category)meadow soil in Sanjiang Plain were used as the survey object,and the indoor enzyme analysis method was used to reveal the soil enzyme activity with the trend of paddy field reclamation years.[Result]With the increase of redamation years,the soil enzyme activities in the paddy soils had different degrees of change in the paddy soils.The urease activity in the paddy meadow soil decreased significantly with the increase of reclamation years.The urease activity of the bottom layer decreased after tillering into the paddy field.With the increase of reclamation years,the phosphatase activity of the meadow soil decreased after the dry farmland becaming the paddy field.The catalase activity of the meadow soil plowed into the paddy field after plowing into the paddy field.The soil layer showed a decreasing trend,while the plough layer showed an increasing trend;after the meadow soil planted into the paddy field,the invertase activity decreased in the plough layer and the plough layer,and it increased in the core layer.[Conclusion]The evolution rate of soil enzyme activity is different in meadow soil after being cultivated into paddy field.
作者
焦峰
吕淑敏
汪昊
唐雷
张东萌
王秋菊
刘峰
JIAO Feng;L Shu-min;WANG Hao(Heilongjiang Bayi Agricultural University,Daqing,Heilongjiang 163319)
出处
《安徽农业科学》
CAS
2019年第23期174-176,共3页
Journal of Anhui Agricultural Sciences
基金
国家科技支撑计划子课题(2015BAD23B05-07)
黑龙江省自然科学基金项目(D2018005)
关键词
水田
垦殖年限
土壤酶活性
Paddy field
Reclamation years
Soil enzyme activity
