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为提高长白落叶松苗木质量,探索相应合理的施肥配方,增加肥料利用率,避免由于施肥不当所造成的经济损失及对环境的污染,对长白落叶松S1-1换床苗木进行正交施肥试验,研究氮、磷、钾肥对苗木生长量和叶绿素含量的影响,探讨苗木的施肥效应及苗木的最佳施肥配比。结果表明:影响苗木生长的各肥料因子表现为尿素>过磷酸钙>硫酸钾;促进长白落叶松S1-1换床苗木生长的最佳用量为尿素55g/m2、过磷酸钙200g/m2或150g/m2、硫酸钾60g/m2或20g/m2。
In order to improve the quality of Larix olgensis seedlings, explore the appropriate fertilization formula, increase the fertilizer utilization rate, avoid economic losses due to improper fertilization and pollution of the environment, orthogonal test fertilization of Larix olgensis S1-1 bed seedlings , The effects of nitrogen, phosphorus and potassium fertilizers on the growth of seedlings and chlorophyll content were studied, and the fertilization effect of seedlings and the optimum fertilization ratio of seedlings were discussed. The results showed that the best fertilizers for growth of seedlings were urea> superphosphate> potassium sulphate. The best dosage for promoting growth of seedlings of Larix olgensis S1-1 bed was urea 55g / m2, superphosphate 200g / m2 or 150g / m2, potassium sulfate 60g / m2 or 20g / m2.