Effects of Mulching Wood Chips on Soil Physicochemical Properties and Root Growth of Cherry Blossom
In order to provide theoretical basis for soil mulching standards,the effects of mulching wood chips on soil physicochemical proper-ties and the growth and development of cherry blossom roots were investigated.The changes of soil physical and chemical properties and root growth of cherry blossoms after laying wood chips were measured.The results showed that mulching wood chips could significantly improve soil physicochemical properties and promote root growth of cherry blossoms.After mulching wood chips,the soil bulk density decreased significantly,while the soil mass water content,volumetric water content,water storage capacity,maximum water capacity,capillary water capacity,minimum water capacity,non-capillary porosity,capillary porosity and total porosity increased significantly.The pH value decreased significantly after cov-ering wood chips,and the soil organic matter content,available phosphorus,available potassium,nitrate nitrogen,total iron and total zinc con-tents were significantly higher than those of soil without wood chip covering.Covering with wood chips could promote the growth of cherry blos-som roots,and the total length of cherry blossom roots after covering with wood chips was more than 10 times that without covering.The correla-tion analysis results showed that the soil bulk density and non-capillary porosity were significantly correlated with the root growth of cherry blos-som.The smaller the soil bulk density and the larger the non-capillary porosity were,the more favorable the root growth of cherry blossom.In summary,the soil covered with wood chips in cherry blossom garden could improve the physical and chemical properties of soil and promote the growth of cherry blossom roots.
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