覆盖对烟田土壤酶活性及烤烟叶片荧光特性的影响  

Effect of different mulching measures on soil enzyme and fluorescence characteristics of tobacco leaves

作　　者：许自成[1] 王小东[2] 杨伊乐[3] 刘占卿[3] 

机构地区：[1]河南农业大学烟草学院,河南郑州450002 [2]河南科技大学农学院,河南洛阳471003 [3]河南省烟草公司伊川县公司,河南伊川471300

出　　处：《干旱地区农业研究》2011年第1期197-200,共4页Agricultural Research in the Arid Areas

基　　金：河南省烟草专卖局科技攻关项目(HYKJ200702;HYKJ200718)

摘　　要：通过对烤烟大田3种不同覆盖方式的覆盖效应比较表明:覆盖明显增强了土壤过氧化氢酶和蔗糖酶活性,对脲酶活性有一定抑制作用;在烤烟生长前期,液膜覆盖处理土壤过氧化氢酶活性较对照和地膜覆盖处理分别平均提高5.72%、23.19%,且覆盖处理间差异达0.05显著水平;覆盖处理的蔗糖酶较对照平均提高0.8%,但3个处理间差异均不显著;覆盖处理的烤烟叶片的Fv/F0、Fv/Fm显著高于对照处理,且差异达0.05显著水平,覆盖处理间烤烟叶片荧光参数的差异不显著,具有同等效应。Comparison was made of effects of three different mulching ways applied to tobacco field experiment,and the results showed that mulching treatment enhanced obviously the activity of soil peroxidase and soil sucrase,while it restrained the activity of soil urease to a certain extent.As compared with contrast and plastic film mulching treatments,liquid film mulching improved significantly the activity of soil peroxidase,and the activity was increased by 5.72% and 23.19% respectively on the average at vigorous growing stage of tobacco,and the differences of two mulching treatments reached significant level（P0.05）.At the same time the activity of soil sucrase under mulching treatment increased by 0.8% in comparison with contrast treatment,but the differences of three treatments didn′t reach significant level（P0.05）.Tobacco leaves under Fv/F0 Fv/Fm of mulching treatments were significantly larger than contrast treatment,and their differences reached significant level（P0.05）,while the effect distinction of chlorophyll fluorescence parameter was not significant under plastic film mulching and liquid film mulching,and their effect was equivalent.

关 键 词：地膜覆盖 液态地膜 叶绿素荧光参数 土壤酶 烤烟 

分 类 号：S572.01[农业科学—烟草工业] S154.2[农业科学—作物学]