关键词: 蔬菜, 育苗基质, 草炭, 理化特性

Abstract: In this study，we analyze the physiochemical properties of peat-moss for vegetable seedling production．Some remarkable differences are found between 4 overseas peat-moss（from Denmark，Finland，Germany）and 4 domestic peat-moss（from Qingyuan County of Liaoning Province，Liaoyuan County of Jilin Province，Huachuan County and Yanshou County of Heilongjiang Province）．The results indicate that the decomposition degree of domestic peat-moss is H3-H5，much higher than that of the overseas peat-moss（H1-H2）．Therefore，the ratio of＜0.5 mm particle is greater，about 4-10 folds over the overseas peat-moss．Also，the saturation moisture content of the domestics is lower，only 50% of the values obtained from the overseas peat-moss．Furthermore，we demonstrate that compared to the overseas，the domestic peat-moss contains higher content of total N，P and K，available N，but lower content of available P and K．

Key words: Vegetable, Substrate, Peat-moss, Physicochemical property