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作 者 ：吕金荣 武觐文

期 刊 ：林业科学 1997年 33卷 zk1期 页码：111-118

关键词：虫粪；土壤肥力；物质循环；补偿作用；

Keywords:Trass, SoiI fertility, Material cycle, Compensating effect,

摘 要 ：松毛虫取食松针，但它产生的虫粪又具有增强土壤肥力、改良土壤性质的作用。我们研究了虫粪在林间的分布、存在状态，对土壤微生物区系、林间氮素循环和土壤理化性质的影响。结果表明：松毛虫取食过程的碎屑作用是林间物质循环的重要环节；虫类能够改善林地土壤的理化性状；促进土壤微生物的生长，尤其是真菌数量显著提高；虫粪中的单宁类物质具有促进固氮酶活性的作用，在试验期间，每一百克虫粪土由微生物固定的氮素达22mg。

Abstract:This paper aims to study on the improving effect of Chinese pine caterpillar’S frass on the soil fertility in the light of the frass that can compensate the tree growth in lagging time．The results show that during feeding of the Chinese pine caterpillar the fragmentation is important in material transformation；that the frass can ameliorate the physical and chemical characters；and that the frass applying can boost the number of soil microbe，especially the fungi which is three times as that of the check soil．The total microbiomass shows obvious increasing．The tannic acid and phenol in frass can promote the activity of nitrogenase by 3 times and every 100 gram dry frass soil can fix 22 milligram nitrogen by biological nitrogen fixation．

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