杉木深山含笑混交林土壤肥力的研究

对杉木深山含笑混交林和杉木纯林的土壤酶活性、土壤结构、化学性质及土壤水分等的研究结果表明：混交林土壤容蓄能力大，通气性好，土壤水解性酶和氧化还原酶活性、呼吸作用强度、养分贮量及供应均比纯林高．混交林土壤肥力状况有利于其杉木生长，是一种较好的混交组合．

Study on the Fertilities of Mixed Forests of Cunninghamia lanceolata and Michelia maudiae

In this paper, the soil fertilities of mixed forest of Cunninghamia lanceolota and Michelia maudiae are studied. The result showed that the mixed forests have betted soil structure and moisture properties;that the hydrolytic enzyme and oxidative-reductive enzyme activities, soil-respiration intensity, soil nutrient reserves and offering capacity are all higher than that of pure Chinese fir stand; that condition of soil fertilities of mixed forest benefit the growth of trees; and that cultivated mixture is an effective biological mesure for scientific management of repeated Chinese fir plantation wood land.