亚热带茶园土壤的某些生物化学性状研究

茶园土壤的有机质含量、腐殖质组成、有机碳的循环与平衡特点、酶活性及其在施肥条件下的变化情况与土壤肥力密切相关．试验结果表明：亚热带茶园土壤有机质含量水平较低，腐殖质组成中以富里酸为主，HA／FA比、酶活性均比起源土壤略低；高产茶园土壤有机碳库的循环水平较高，在不施有机肥的情况下仍能保持平衡；低产茶园土壤有机碳库的循环水平较低，输出大于输入，施用有机肥可以较快地提高茶园土壤有机质含量和酶活性水平．增施有机肥和实行茶林复合是培肥茶园土壤、提高茶园生产力的有效措施．

Some Biochemical Properties of Tea Soils in Subtropical Region of China

The content of organic matter, composition of humic substance, organic carbon cycle and balance, enzyme activity in tea soils were the important index of tea soil fertility. The experimental results show that there are a low content of organic matter in tea soils of subtropical region of China,low HA/FA ratio and enzyme activity,compared with that of original soil. The tea soil with high productivity has a higher input than output of organic carbon, and the tea soil with low productivity was in turn. Applicaion of organic fertilizer and intercropping of tea and trees are the effecive measures to the maintenance of tea soil fertility.