花椒叶浸提液对土壤微生物数量和土壤酶活性的影响

被引:55
作者
吕可 [1 ]
潘开文 [1 ]
王进闯 [1 ]
万涛 [2 ]
机构
[1] 中国科学院成都生物研究所 
[2] 四川省林业厅种苗站 
关键词
化感作用; 花椒; 土壤酶; 土壤微生物;
D O I
10.13287/j.1001-9332.2006.0328
中图分类号
S573.9 []; S154.4 [土壤-植物系统];
学科分类号
摘要
通过用花椒叶浸提液浇灌盆栽花椒幼苗,研究浸提液对土壤酶和土壤微生物的影响.结果表明,花椒叶浸提液使根际土中细菌、真菌和放线菌数量以及微生物总数均有不同程度的减少,根际土中真菌和放线菌的数量变化呈降-升-降-升的趋势.20、60和80g.L-1浓度的叶浸提液使非根际土中细菌的数量显著增加21.59%、107.55%和8.62%,而40g.L-1浓度的叶浸提液则使非根际土中细菌数量显著降低22.56%.叶浸提液使根际土蛋白酶、蔗糖酶和酸性磷酸酶活性明显低于非根际土相应的酶活性,而过氧化氢酶和多酚氧化酶活性则显著升高.土壤的蛋白酶活性与蔗糖酶活性呈显著正相关,与土壤放线菌数量呈显著负相关;多酚氧化酶活性与蔗糖酶活性呈显著负相关,与细菌、真菌、放线菌以及微生物总数呈显著正相关;放线菌只与蛋白酶、多酚氧化酶、蔗糖酶3种酶活性及真菌呈显著相关,与过氧化氢酶、酸性磷酸酶以及细菌和微生物总数的相关性均不显著.
引用
收藏
页码:1649 / 1654
页数:6
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