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[目的]研究秋季施肥对油松容器苗生长、氮吸收和抗寒性的影响。[方法]对在生长期经过不同指数施肥水平10、40、80和120mg/株处理过的油松容器苗进行秋季施肥,设置4个处理水平0(对照)、12、24和48 mg/株,苗木在温室培育一个生长季并在翌年进行造林试验。[结果]秋季施肥24 mg/株为最佳处理,在40E-24处理下,N含量相比对照增加了15.9%,抗寒性在-20℃下更提高了95.2%,造林效果最佳。[结论]秋季施肥可有效提高苗木体内养分含量,抗寒性及翌年造林效果。但过量的秋季施肥(48 mg/株)并不促进苗木生长甚至有抑制或者损害作用。
[Objective] The research aimed to study the effects of autumn fertilization on the growth, nitrogen absorption and cold resistance of Pinus tabulaeformis seedlings. [Method] The seedlings of Pinus tabulaeformis seedlings treated with 10, 40, 80 and 120 mg / plant of different index during the growing season were fertilized in autumn with four treatment levels 0 (control), 12, 24 and 48 mg / plant , Nursery stock nurture a growing season in the greenhouse and afforestation in the following year. [Result] The results showed that under the treatment of 40E-24, the N content was increased by 15.9% compared with the control and the cold resistance was increased by 95.2% at -20 ℃ with the best afforestation effect. [Result] [Conclusion] The autumn fertilizer could effectively increase the nutrient content, cold resistance and the afforestation effect of the following year. However, excessive fall fertilization (48 mg / plant) did not promote the growth of seedlings even inhibited or damaged.