关键词: 李园, 土壤管理, 土壤理化性质, 川中丘区

Abstract: Soil's physical and chemical properties of different soil managements in the plum orchard of Sichuan Daying are studied, and the results show:during the summer drought period, as far as water-containing soil layers are concerned, among different soil management modes, mowing and covering contains the highest moisture content. In terms of the soil's thermal retardation and cooling, mowing and burying and returning the livestock's feces to the orchard are not as effective as mowing and covering, but more effective than clean tillage. Among these managements, the soil's bulk densities vary much. Compared with clean tillage, in the soil layer ranging from zero to 20 cm deep, the soil's bulk density is 0.45 g/cm³ less when returning the livestock's feces to the orchard. There are commonly variant levels of improvement in all the soil's nutrient indexes when compared with those before the treatments. All the processed nutrient indexes are best in returning the livestock's feces to the orchard.

Key words: plum orchards, soil managements, soil physical and chemical properties, hilly area of central Sichuan