关键词: 茶树扦插, 茶树扦插, 苗圃地, 夏季覆地膜, 消毒

Abstract: Based on the method of Geo-statistics, this study analyses the change regulation, special structure, distribution and cause of impact of mining on soil physicochemical properties through determining and calculating the indexes of soil bulk density, porosity, mechanical composition and organic matter in order to provide theoretical basis to restoration management of disturbed zone. By contrasting the disturbed zone and undisturbed zone, the results show that:①The average change shows that the soil bulk density, gravel and organic matter increase, among which bulk density increases significantly at 0-20cm and gravel increases at 0-60cm(p<0.05); while the porosity, silt and clay reduces, among which porosity decreases significantly at 0-20cm, organic matter decreases at 0-40cm and silt reduces at 0-60cm(p<0.05) and other layers have no significant change.② The spatial dependency degree of porosity, bulk density and organic matter decrease due to mining, among which organic matter varies from strong dependency to moderate dependency; while the spatial dependency degree of sand, silt and clay increase due to mining, among which sand varies from moderate dependency to strong dependency.③The distribution of soil physicochemical properties has a certain similarity in three soil layers, among which the two sides of Changhe is obvious. The damage of soil by mining can be divided into dominant and implicit damage and there is a causal relationship between the two. The subsidence and cracks in surface may cause soil compaction and deformation,which promote the exchange between soil air and atmosphere and thus change the physicochemi- cal properties of soil.The results showed that the physical and chemical properties of soil in the disturbed and undisturbed areas were significantly different, which could provide a systematic diagnostic basis for the changes of soil physical and chemical properties and their causes.