日本落叶松幼林复合肥施肥效应

Effect of Fertilization on Young Larix kaempferi Plantation

对日本落叶松幼林进行复合肥施肥试验 ,4年定期观测和系统分析结果显示 :施肥对苗木生长效果显著 ,能有效促进幼林地径、树高和冠幅的生长量 ;肥效具有明显的后滞现象 ;

This paper reports the result of a four year research on growth response of young Larix kaempferi plantations to fertilization.The growth response of Larix kaemperi was significant to the application of NPK.The increments growth of tree height,basal diameter and crown width of the treatment plots were higher than that of the check plots.Though it was no remarkable in the first year of planting ,the effects of fertilization was clear in the second year and last to the forth year.There was no obvious difference between various NPK level treatments.