桉树-甘蔗复合经营土壤物理性状研究  

Study on Soil Physical Properties of Eucalyptus-sugarcane Composite Systems

作　　者：袁野[1] 刘宁 余雪标[2] YUAN Ye;LIU Ning;YU Xue-biao(Forestry College of Northeast Forestry University,Harbin,Heilongjiang 150040;Forestry College of Hainan University,Haikou,Hainan 570228)

机构地区：[1]东北林业大学林学院,黑龙江哈尔滨150040 [2]海南大学林学院,海南海口570228

出　　处：《安徽农业科学》2020年第16期119-122,156,共5页Journal of Anhui Agricultural Sciences

基　　金：东北林业大学国家级大学生创新项目(201910225094)。

摘　　要：针对桉树-甘蔗复合经营系统不同采样位置(距离林带1.5、3.0、4.5、6.0 m处)的土壤物理性质进行比较研究,结果表明桉树-甘蔗复合经营后,由于人为(耕作施肥等)的正向干预,土壤表层养分集中,间作带土壤(距离林带3.0、4.5、6.0 m处)物理性状得到了有效改良。研究的主要结论:间作带表层土的土壤容重降低明显,同层相比,0~20cm土层土壤容重的排列顺序均为距离林带6.0 m<距林带4.5 m<距离林带3.0 m<林带<距林带1.5 m,说明间作对土壤容重的降低作用随距离呈正相关。桉树-甘蔗复合经营改善了土壤持水状况,提高了空白间隔(距离林带1.5 m处)的持水能力。桉树-甘蔗复合经营系统下,土壤容重与总孔隙度和毛管孔隙度呈负相关,从土层的角度分析,饱和持水量与土层呈显著负相关。桉树-甘蔗复合经营对土壤物理性状的改善主要集中在表层。The soil physical properties of eucalyptus-sugarcane composite system at different sampling positions(1.5,3.0,4.5,6.0 m away from the forest belt) were compared.The results showed that after the eucalyptus-sugarcane complex management, the physical properties of the soil in the intercropping zone(3.0,4.5,6.0 m away from the forest belt) were effectively improved due to the positive intervention of man-made(cultivation and fertilization, etc.).The main conclusions of the study were as follows:soil bulk density of topsoil in intercropping zone decreased significantly,compared with the same layer, the order of soil bulk density in the 0-20 cm soil layer was 6.0 m away from the forest belt < 4.5 m away from the forest belt < 3.0 m away from the forest belt < forest belt < 1.5 m away from the forest belt.The results showed that the effect of intercropping on soil bulk density was positively correlated with the distance.Eucalyptus-sugarcane compound management improved the soil water holding capacity, and increased the water holding capacity of the blank space(1.5 m away from the forest belt).Soil bulk density was negatively correlated with total porosity and capillary porosity under eucalyptus-sugarcane compound management system.From the perspective of the soil layer, the saturated water holding capacity was significantly negatively correlated with the soil layer. Therefore, the improvement of the physical properties of the soil by the eucalyptus-sugarcane compound management was mainly concentrated on the surface.

关 键 词：桉树 甘蔗 林农复合经营 土壤物理性质 

分 类 号：S714.2[农业科学—林学]