桐药间作对林地土壤物理性质影响研究

Effects of Different Intercropping Patterns on Soil Physical Characters of Vernicia fordii

摘要:

摘要：研究了5种套种模式（油桐+玉竹、油桐+黄精、油桐+桔梗、油桐+麦冬、油桐+石蒜）下油桐林地土壤物理性质的变化。结果表明：不同套种模式间土壤物理性质存在显著差异，相同套种模式不同土层间也存在一定差异，不同套种模式间总体变化趋势基本相同，但在不同时期也存在一定差异。套种黄精、玉竹和麦冬能显著降低土壤容重和比重，增加土壤孔隙度，套种麦冬土壤容重降低率最大达18.23%，套种黄精土壤孔隙度和土壤毛管持水量不降反增，最大增加率分别为3.32%和25.57%。

Abstract:

Abstracts:In this paper,taking the five interplanting patterns which are Polygonatum odoratum,P. sibiricum,Lycoris radiata,Ophiopogon japonicas, Platycodon grandiflorus as the test objects,the experiment is to explore the effects of different interplanting pattern on soil physical and chemical properties.The results showed that the physical and chemical properties were significant difference among different interplanting patterns,it was different the physical and chemical properties among different soil layers of the same interplanting pattern,the overall change trend was alike,but the difference was existence in different growth period. The interplanting patterns “V. fordii+ P. sibiricum”,“V. fordii+ P. odoratum” and “V. fordii+ O. japonicas” reduced soil bulk density and soil specific weight ,increased soil total porosity, the soil bulk density of the pattern “V. fordii+ O.japonicas” reduced 18.23%; the soil total porosity and capillary capacity of the pattern“V. fordii+ P. sibiricum” wan not reduced, rather than increased 3.32% and 25.57%.