不同覆盖处理对红花槭种植土壤及植株生长的影响

通过比较不同类型覆盖物处理对红花槭种植土壤的改良效果和植株生长效应，筛选适宜的栽培管理方式。结果表明，覆盖处理对土壤夏季降温效果显著，植生覆盖物常春藤和扶芳藤处理效果较好；覆盖处理可显著降低土壤容重、提高土壤含水量和孔隙度，提高叶片叶绿素含量，促进植株胸径生长；粒径较大的有机覆盖物和无机覆盖物对土壤的改良效果好，而植生覆盖物常春藤对胸径生长处理效果最好。因此，红花槭作为行道树应用和养护管理时，在土壤板结严重的情况下，宜选择粒径较大的有机覆盖物；土壤质量相对较好环境下，可选择阔叶型植生覆盖物。

Effects of Different Mulches on Soil Properties and Growth of Acer rubrum

For providing the better modes for cultivation and management of Acer rubrum,the soil improvement and plant growth of different mulches were compared in this study.The results indicated that the cooling effect of mulches was very significantly in summer and the living mulches Hedera nepalensis var.sinensis and Euonymus fortunei were better.The soil bulk density decreased significantly and soil porosity and water content increased significantly by the treatments of mulches.And the chlorophyll content and DBH growth were also improved.The effects of organic mulch and inorganic mulch with large size particle on improvement of soil physical properties were better while the effect of living mulch H.nepalensis var.sinensis on improvement of DBH growth were the best.Thus,when application and management of A.rubrum as street tree,organic mulch with much larger size particle should be selected under severe compaction of soil while living mulch with broad-leaved would be selected under better quality of soil.