论文部分内容阅读
为了确定最佳施肥量和营养诊断指标,文中采用 D—饱和最优设计和诊断施肥综合法(DRIS),对日本落叶松移植苗肥料效应及营养诊断进行了研究。结果表明,日本落叶松移植苗最佳施肥量碛酸铵为675～945 kg/hm~2,过磷酸钙为787.5～1084.5kg/hm~2,硫酸钾为187.5～247.5kg/hm~2。针叶养分适宜比值为 P/N=0.108 1±0.012 4,K/N=0.379 5±0.0787,P/K=0.2637±0.0428。
In order to determine the optimal fertilization and nutrition diagnosis indexes, the fertilizer effect and nutrition diagnosis of Japanese larch transplant seedlings were studied using D-Saturate Optimal Design and Diagnostic Fertilization Synthesis (DRIS) method. The results showed that the optimum fertilization rates of Japanese larch seedlings were 675 ~ 945 kg / hm ~ 2, 787.5 ~ 1084.5 kg / hm ~ 2 and potassium sulfate 187.5 ~ 247.5 kg / hm ~ 2. The appropriate ratio of coniferous nutrients was P / N = 0.108 1 ± 0.012 4, K / N = 0.379 5 ± 0.0787, P / K = 0.2637 ± 0.0428.