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为了减少油茶林地土壤养分的流失,提高肥料的利用率并提高油茶经济效益,进行正交配方施肥试验,设置13个处理,包括9个正交设计处理和4个缺素对照处理,探究不同氮磷钾配方施肥对油茶幼苗生长及其土壤养分含量的影响。结果表明:处理7(即施用尿素180g·株~(-1)·年~(-1),钙镁磷75g·株~(-1)·年~(-1),氯化钾60g·株~(-1)·年~(-1)最能促进油茶幼树树体生长、叶片叶绿素的累积及土壤速效钾含量累积;处理9(即施用尿素180g·株~(-1)·年~(-1),钙镁磷225g·株~(-1)·年~(-1),氯化钾40g·株~(-1)·年~(-1)对于油茶林地碱解氮和有效磷含量的促进作用最为明显;处理8(即施用尿素180g·株~(-1)·年~(-1),钙镁磷150g·株~(-1)·年~(-1),氯化钾20g·株~(-1)·年~(-1)对于土壤有机质的促进作用最为显著。油茶幼苗树体生长及林地土壤养分含量间密切相关,适宜的幼树配方施肥为配方7、8、9,即尿素、钙镁磷、氯化钾用量分别为180g·株~(-1)·年~(-1),75~225g·株~(-1)·年~(-1),20~40g·株~(-1)·年~(-1)。
In order to reduce the loss of soil nutrients in Camellia oleifera forest, improve the utilization rate of fertilizer and increase the economic benefits of Camellia oleifera, orthogonal test was conducted with 13 treatments including 9 orthogonal design treatments and 4 deficiency control treatments to explore different nitrogen Effect of Phosphorus and Potassium Formula Fertilization on the Growth and Soil Nutrient Content of Camellia oleifera Seedlings. The results showed that treatment 7 (ie 180g · plant -1 (-1) urea · 75g · mg -1 · N -1) of potassium magnesium phosphate and 60g · KCl ~ (-1) · a -1 could promote the growth of tree seedlings, the accumulation of chlorophyll in leaves and the accumulation of available potassium in soil. Treatment 9 (ie urea application 180g · plant ~ (-1) · year ~ (-1), 225 g · kg -1 · kg -1, 40 g · kg -1 · N -1 of potash fertilizer were the most effective The effect of phosphorus content was the most obvious. Treatment 8 (ie, urea application rate of 180 g · plant -1 (-1) · kg -1) · 150 g · plant -1 (-1) · year -1 The effect of 20g · plant -1 (-1) K (-1) on soil organic matter was the most significant.The growth of Camellia oleifera seedlings was closely related to the soil nutrient content of forest land, and the suitable sapling formula was Formulation 7, 8, 9, namely, urea, Ca, Mg and P, KCl were 180g · plant -1 · N -1, 75-225g · N -1 · N -1, , 20 ~ 40g · plant ~ (-1) · year ~ (-1).