土壤紧实程度对其某些相关理化性状和土壤酶活性的影响  

Effect of Compaction on Soil Properties and Soil Enzyme Activities

作　　者：张国红[1] 张振贤[1] 黄延楠[1] 梁勇[2] 

机构地区：[1]中国农业大学农学与生物技术学院,北京100094 [2]山西省农业科学院,山西太原030032

出　　处：《土壤通报》2006年第6期1094-1097,共4页Chinese Journal of Soil Science

基　　金：由国家科技攻关项目(2004BA521B04);北京市自然科学基金(6011002)资助

摘　　要：利用外力夯实、向土壤中加入蛭石等方法造成土壤容重不同,以研究土壤紧实程度对其理化性状的影响。结果表明,紧实土壤水分的散失较快,晴天地温高,且变化幅度大,阴天和夜间紧实土壤地温低,变化幅度小。紧实土壤可降低植株对土壤养分的吸收,致使土壤余留的有效态养分较多。土壤的转化酶、脲酶、过氧化氢酶、多酚氧化酶、磷酸酶活性的变化也受土壤紧实度的影响。总之,土壤疏松有助于保水、蓄热和提高多种土壤酶活性。By tamping and adding vermiculite to the topsoil layer to adjust soil compaction,the experiment was carried out to study the effect of soil compaction on soil physical, chemical and biochemical properties. The results indicated that soil water evaporation became slowly and soil temperature changed in a great extent in the compacted soil, especially in the fine day. Consequently ,soil compaction affected the available nutrient contents during tomato growth, and it also decreased the uptake of nutrients, thus soil remainder nutrition content increased. Soil enzyme activities for instance, invertase, urease, catalase, polyphenol oxidase and phosphatase were all affected by soil compaction.

关 键 词：土壤紧实程度 土壤性状 日光温室 番茄 

分 类 号：S152.4[农业科学—土壤学]