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为进一步研究兴安落叶松〔Ｌａｒｉｘｇｍｅｌｉｎｉ（ＲｕＰｒ）〕播种苗施肥生理效应，采用不同肥料和用量的组合配比，测定苗木在各生长期内叶绿素的含量，并对苗木体内营养元素Ｎ、Ｐ含量的动态变化进行研究分析。结果表明：在苗木进入速生期时，高生长和生物量最大，此时叶绿素含量最高，即苗木的叶绿素含量对施肥效应的最佳选择为Ａ３（４）Ｂ４（３）Ｃ２；在苗木进入生长后期时，其叶绿素的含量相对降低，即叶绿素含量对施肥效应的最佳选择为Ａ４Ｂ１Ｃ４。苗木在不同生长阶段体内Ｎ、Ｐ含量的高低，不仅与施肥种类及用量组合配比的选择有关，而且与苗木在不同物候期对土壤中养分的吸收和利用情况以及苗木本身生长节律密切相关。
In order to further study the physiological effects of Larixgmelini (RuPr) sowing seedlings, the content of chlorophyll of seedlings in each growth period was determined by the combination ratio of different fertilizers and dosage, and the contents of N and P The dynamic changes of research and analysis. The results showed that when the seedlings entered the fast-growing period, the highest growth and biomass were the highest, and the highest chlorophyll content at that time was the best choice for the effect of the chlorophyll content of seedlings on A3 (4) B4 (3) C2. Later, the content of chlorophyll decreased, that is, the best choice of chlorophyll content for fertilizer effect was A4B1C4. The content of N and P in different growth stages of seedlings is not only related to the choice of fertilization types and dosage combinations, but also to the nutrient absorption and utilization in the soil and the growth rhythm of seedlings at different phenophases.