不同桐药套种模式对土壤理化性质的影响  

Effects of different interplanting patterns on soil physical and chemical characters of Vernicia fordii

作　　者：杜洋文[1] 曾祥福[1] 邓先珍[1] 李双龙 

机构地区：[1]湖北省林业科学研究院,湖北武汉430075 [2]恩施州林业科学研究所,湖北恩施445000

出　　处：《森林与环境学报》2017年第2期181-187,共7页Journal of Forest and Environment

基　　金：948项目"经济林缓控释肥研制及配套高效施肥技术引进(2015-4-05)";林业公益性行业科研专项"武陵山油桐良种集约经营技术集成示范(201304707)"

摘　　要：为筛选出对油桐林下的土壤理化性质影响较大的套种模式,通过林下套种5种药用植物(玉竹、黄精、桔梗、麦冬、石蒜),分别测定了不同套种模式下不同时期、不同土层土壤的理化性质。结果表明,不同套种模式间土壤理化性质存在显著差异(P<0.05),相同套种模式不同土层间也存在显著差异,不同套种模式间总体变化趋势基本相同。套种桔梗和石蒜对物理性质影响较大,其中土壤容重最大增加33.14%,比重最大降低14.18%,总孔隙度最大降低33.58%。套种黄精和桔梗会使土壤氮、磷含量显著增加,其中全氮和全磷含量最多可增加62.83%和111.80%。套种麦冬和石蒜会使土壤氮、磷、钾含量都显著降低,套种桔梗、黄精和玉竹会使有机质含量显著提高,最高达148.37%。In order to screen reasonable interplanting patterns in the Vernicia fordii plantation from the five medicinal plants including Polygonatum odoratum （ PO） , Polygonatum sibiricum （ P S ） , Platycodon grandiflorus （ PG） , Ophiopogon japonicas （OJ） , Lycoris radiata （ LR） , soil physical and chemical properties were mensured at different periods in this paper. The results showed that the physical and chemical properties were significant difference among different interplanting patterns and different soil layers with the same interplanting pattern while the overall change trend was similar among these treaments. The interplanting patterns V. fordii＋PG and V. fordii＋LR could significantly impact on soil physical properties that soil bulk density increased mostly by 33.14%, soil specific weight reduced mostly by 14.18% and total porosity by 33.58%. The interplanting pattern V. fordii＋PS and V. fordii＋PG could significantly impact on N and P content that N content increased mostly by 62.83%, P content by 111.80%. The interplanting patterns V. fordii ＋ OJ and V. fordii ＋ LR could significantly reduce N, P and K content. The pattern V. fordii ＋ PG, V. fordii＋PS and V. fordii＋PO could significantly increase soil organic matter content, mostly by 148.37%.

关 键 词：油桐 药用植物 套种模式 土壤 理化性质 

分 类 号：S727.32[农业科学—林木遗传育种] S794.3[农业科学—林学]