【摘要】 以长白落叶松S1-1苗木为对象,利用正交试验方法研究氮、磷、钾肥对苗木生长量和叶绿素含量的影响,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,其中,尿素对苗高、地径及叶绿素含量的影响差异显著,为影响苗木各项指标的主导因子;培育换床苗的最佳施肥量为尿素55 g·m-2、过磷酸钙200 g·m2或150 g·m-2、硫酸钾60 g·m-2或20 g·m-2。更多还原

【Abstract】 Larix olgensis Henry S1- 1seedling was taken as objects to research the effects of nitrogenous,phosphatic and potash fertilizer to seedling growth and chlorophyll content by using orthogonal experimental method,results indicated that the effects of influence factors was urea > superphosphate ≥ potassium sulfate,including that the influence of urea presented significant difference to seedling height,ground diameter and chlorophyll content,which was the dominant factor that affected seeding indicators. The best fertilizing amount of transplanting seedling was urea 55 g·m- 2,superphosphate 200g·m- 2or 150 g·m- 2,potassium sulfate 60 g·m- 2or 20 g·m- 2.更多还原