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本文研究了暗棕壤条件下氮、磷施肥对长白落叶松播种苗质量的影响。结果表明:氮磷肥施用比例显著影响长白落叶松播种苗苗高、地径和主根生长;过量供氮并没有造成苗木徒长,而是通过加剧氮磷供应的不平衡来限制养分的均衡吸收,抑制苗木生长;在本试验地土壤有效氮富集而有效磷缺乏的条件下,长白落叶松播种苗适宜的施肥管理措施是控制肥料施入,通过苗木生长来消耗土壤中过饱和的氮素,以平衡土壤养分,既节约成本、休养土地,又使苗木质量得到整体提高。
In this paper, the effects of N and P fertilization on sowing quality of Larix olgensis plants under dark brown soil conditions were studied. The results showed that the proportion of N and P significantly affected the height, diameter and root growth of Larix olgensis sowing seedlings. Excess nitrogen supply did not result in the growth of nursery stock, but restricted the balanced absorption of nutrients by increasing the imbalance of nitrogen and phosphorus supplies, Seedling growth; In the experimental soil available nitrogen enrichment and available phosphorus deficiency conditions, Changbai larch sowing appropriate fertilizer management measures are to control the fertilizer applied through the growth of seedlings to consume the soil supersaturated nitrogen to Balance soil nutrients, both cost savings, recuperate the land, but also to improve the overall quality of seedlings.