寿宁设施葡萄园土壤有机碳与其物理性质的相关性分析

Correlation Analysis of Soil Organic Carbon and Its Physical Properties in Shouning Facility Vineyard

以福建省寿宁县千亩高优葡萄示范园区为研究对象,选取了14个代表性设施葡萄园,按照0~20、20~40、40~60cm深度分层取样,分别测定土壤有机碳含量、土壤总孔隙度、土壤毛管孔隙度、土壤通气孔隙度、土壤容重,以及土壤粘粒、土壤粉粒、土壤砂粒含量,分析各土层土壤有机碳含量与土壤物理性质之间的关系。结果表明,设施葡萄园土壤有机碳含量具有表聚现象,且随土壤深度的增加而减少;设施葡萄园仅20~40、40~60cm土壤有机碳含量与土壤容重呈极显著负相关,其他的差异均不显著;设施葡萄园各土层土壤物理性质与土壤有机碳含量之间的回归线性模型决定系数(R^(2))随着土层深度的增加而增加,其中土壤毛管孔隙度、土壤通气孔隙度、土壤容重、土壤粉粒和砂粒含量是影响40~60 cm土壤有机碳含量的主要因素。

In order to investigate the relationship between soil organic carbon content and its physical property factors(soil organic carbon content,soil total porosity,soil capillary porosity,soil aeration porosity,soil bulk density,and the content of soil clay,soil silt,soil sand)of facility vineyards.Fourteen representative vineyards were selected from thousand acres of demonstration parks with high yield and quality in Shouning region of Fujian.Stratified soil samples were collected at depths of 0-20 cm,20-40 cm and 40-60 cm,respectively.The results showed that the soil organic carbon in facility vineyards had a phenomenon of surface aggregation,and it decreased with the increase of soil depth.Soil organic carbon content in 20-40 cm and 40-60 cm was significantly negative correlated with soil bulk density,while the other were not significantly correlated.The determination coefficient(R^(2))of the regression linear model between soil physical properties and soil organic carbon content of each soil layer in facility vineyard increases with the increase of soil depth,among which soil capillary porosity,soil aeration porosity,soil bulk density,soil silt content and soil sand content were the main factors affecting the soil organic carbon content of 40-60 cm.