细菌肥料促进马尾松生长效应的研究

马尾松(pinus massoniana Lamb.)是我国主要造林树种,产于我国南部,是亚热带东部湿润地区典型的针叶树种,广泛分布于全国的15个省区,占全国用材林面积的176%;近年来,马尾松人工林土壤立地质量退化、土壤性质恶化,病虫害时有发生,特别是在中、下等立地条件地区较为严重,引起林业工作者的普遍关注;合理施用化肥可以促进林木生长,然而,按目前林场的实际情况,大面积施用还很不现实,兼之施用化肥很容易造成环境污染,不利于土壤性质的改良。细菌肥料具有用量少、使用方便的优点,能促进林木生长、较好地改良土壤,增强林木的抗逆性,又不容易污染环境等,在未来的林业生产中,将具有广阔的应用前景［1～3］.

Effect of Bacterial Fertilizers on Promoting the Growth of Masson Pine

The effects of different kinds of bacterial fertilizer on the growth of pinus massoniana were studied.The results showed that as a fast growing tree species,1 year old P.massoniana could growth faster by using bacterial fertilizer,especially by using Bacillus and Pseudomonas. Ten months after fertilizing Bacillus and Pseudomonas, the average increment of height reached 30.34% and 21.29%,the average basal area increased by 36.40%and 22.56%,and the crown breadth increased by 46.21%and 31.84% respctively.