不同肥料处理对华北落叶松苗木生长的影响

通过对施用不同肥料的两年生华北落叶松苗木四个生长时期苗高、地径及叶绿素含量的测定,我们研究了不同肥料对苗木生长的影响。结果表明:生长初期,四个处理间的苗高、地径及叶绿素含量差异不显著;速生前期,各处理间苗高和叶绿素含量差异不显著,处理2的地径与其他处理间差异显著;速生后期,处理1的苗高和处理3的地径和叶绿素含量分别与其他各处理间差异显著;硬化期与速生后期表现相同。

Effects of Various Treatments on the Growth of Larix principis rupprechtii Seedlings

Based on the measurement of height,diameter at ground level and chlorophyll content of two-year Larix principis rupprechtii seedlings which had been applied four kind of fertilizer for each block during their four growth stages,effects of fertilizers on the seedling growth had been studied.The result shows: during the initial stage,there is no significant difference for height,diameter growth and chlorophyll content between the four treatments;during the early stage of rapid growth,there is only significant difference between diameter growth of treatment 2 and others;in the later stage of rapid growth,significant difference exists between height of treatment 1 and other three treatments,and there is also significant difference between diameter growth and chlorophyll content of treatment 3 and the left three treatments;at the seedling hardening stage,the same result appears as it shows in the later stage of rapid growth.