生草栽培对湘东丘陵砂梨园土壤理化性状的影响  

Influences of Sod Culture on the Physical and Chemical Characteristics of Soil in Hilly Pyrus pyrifolia Orchard of Eastern Hunan

作　　者：高超[1] 袁德义[1] 袁军[2] 邱亚群[3] 甘国娟[3] 

机构地区：[1]中南林业科技大学国家林业局经济林育种与栽培重点实验室,长沙410004 [2]北京林业大学研究生院,北京100083 [3]中南林业科技大学林学院,长沙410004

出　　处：《湖北农业科学》2011年第8期1593-1595,共3页Hubei Agricultural Sciences

基　　金：国家科技部农业科技成果转化资金项目(2008GB2D200219);湖南省科技计划项目(2009CK4017)

摘　　要：为给丘陵果园生草栽培种植模式提供理论依据,在湖南省浏阳市对丘陵砂梨(Pyrus pyrifoliaNakai)园生草栽培区和清耕区(对照)的土壤理化性质进行了对比研究。结果表明,生草栽培在旱季可显著提高0～35 cm土层土壤的含水量,蓄水保墒效果明显;春季可提高30 cm处土层地温,夏季可降低地温2℃左右,同时使土壤容重降低、总孔隙度显著提高;与清耕区相比,生草栽培区0～20 cm土层的有机质、全氮、全磷、全钾含量有所增长,速效磷、速效钾的含量也显著高于清耕区,但速效氮含量有所下降,比清耕区降低了4.34%。A sod culture experiment was carried out in hilly pear（Pyrus pyrifolia Nakai） orchard in Liuyang city of Hunan province to investigate the physical and chemical characteristics of soil between the areas of soils treated with sod culture management and tillage management（CK） in order to provide theoretical basis for sod culture in hilly pear orchard.The results showed that sod culture could increase water storage of 0～35 cm deep soils and soil moisture in pear orchard during the dry season.It not only increased the temperature of 30 cm deep soil in spring,but also decreased the temperature of soil by 2℃ in summer.In addition,sod culture decreased soil bulk density and increased soil porosity.In sod culture area,soil organic matter,total N,total P and total K of the 0～20 cm deep soil had increased.It also increased the content of available P and available K in pear orchard,but the content of available N has decreased by 4.34%.

关 键 词：生草栽培 丘陵区 砂梨园 土壤 理化性质 

分 类 号：S604.6[农业科学—园艺学] S661.2