关键词: 油松, 油松, 下胚轴, 不定芽, 不定根

Abstract: In order to inspect soil environment quality in fruit tree producing area in Dongying agricultural high-tech demonstration district and guide the safety and cleaner production of local fruit and vegetable, soil organic matter, pH, bulk density, particle size, salt, available nutrient and heavy metal content were analyzed by sampling survey. The results showed that soil organic matter content was low with the range of 0.61% to 1.01%, K content was high while N and P content were low, which indicating the need for enriching the soil fertility. The pH was higher than 8.25 and the content of salt was between 0.12% and 0.18%, which suggested that this area was of light salinization. The ratio of sand grain was relatively high and the soil belonged to sandy loam. Contents of Cd, Hg, Cu, Pb, Cr and As were lower than the limit value of“Environmental Quality Standard of Green Food”, which could realize safety and cleaner production of fruit.