广西大青山马尾松苗期施肥试验

Study on the Fertilization for seedlings of Masson Pine in Daqingshan, Guangxi Province

马尾松(Pinus massoniana Lamb.)是我国主要用材树种之一,苗期施肥作为马尾松培育壮苗的措施,已被广泛应用于生产与研究。但是,据以往报道,施肥试验仅停留在苗床,对苗木造林后的表现则不做深究。而苗木造林后生长的好坏,正是育苗工作者最为关切的问题,亦是衡量苗木质量优劣的重要标准,为此,进行此项试验,可供科研和生产单位参考。

In this paper, the growth of the seedlings and young trees of Finns massoniana are studied. The result indicates that the effectiveness of fertilization on the seedlings (are signicant. In this experiment, NO.3 (N1P3K3) is the best one with a under-ground biomass (dry weight) of 0. 575 g/seedling, which is 21.6% more than that of the check(0.473 g/seedling). Over two years after planting, the height and root diameter of the young trees fertilized by N1P3K3 are 2.63m and 2.54cm respectively, but those of the young check trees only 2.13m and 2.01cm. There is a significant difference between them,and the analysis shows that there is a positive correlation between the height and root diameter of young trees and the underground biomass of the seedlings.