摘要
对辽宁省主要地区不同肥力典型棕壤及其微团聚体中４种主要酶活性进行测定与统计分析，试验结果表明，高肥力棕壤脲酶、中性磷酸酶、蔗糖酶和多酚氧化酶活性分别为１０７３±４０４ＮＨ３－Ｎμｇ·ｇ－１土、２２３２．７±６３３．１酚μｇ－１土·２４ｈ、１３．０９±５．８３葡萄糖ｍｐ· ｇ－１土，２４ｈ和６２５．２酚μｇ·ｇ－１土０．５ｈ，显著高于低肥力棕壤相应的酶活性。在各粒级微团聚体中，＜１０μｍ微团聚体的４种酶活性最高，５０～２５０μｍ微团聚体中的酶活性最低，并且＜１０μｍ微团聚体中酶活性在高低不同肥力土壤之间差异最为显著。
The results obtained from typical brown earth in Liaoning Province showed that the activities of urease, neutral phospatase, invertase and polyphenol oxidase were 1073 ± 404NH3 - Nμ·g -1, 2232.7 ± 633. 1 phenol μg·g-1 24h, 13.09± 5.83 glucose mg·g-1.24h and 625.2 phenol μg·g-1 0:5h in fertile soils, greatly higher than that of the corresponding infertile soils. In<10μm Ancroaggregate the activities of the 4 kinds of enzyme were highest, whereas the lowest activities were in the fraction of 50 - 150μm microaggregates. Significant difference of the tested 4 enzymes in <10μm microaggregates between fertile and infertile brown earths was also found.
出处
《沈阳农业大学学报》
CAS
CSCD
2000年第2期185-189,共5页
Journal of Shenyang Agricultural University
基金
国家自然科学基金!(49571044)
辽宁省博士启动资金!(971069)
