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高山红景天（ＲｈｏｄｉｏｌａＳａｃｈａｌｉｎｅｎｓｉｓＡ．Ｂｏｒ）为长白山珍贵稀有的药用植物，有神草之称，是我省一级保护植物．本文主要记述一年生高山红景天幼苗在龙井地区对氮、磷、钾的反应，采用正交区组二次回归旋转组合设计进行试验，试验结果根长及根重的差异显著，但需肥量不多，瘠薄地适当施氮磷肥能促进根系生长，其模型为：Ｙ根重＝８．７６９５－０．８３３２ｘ１－１．２０２６ｘ２－０．７２２８ｘ３－０．６５６３ｘ１ｘ３－０．２９６２ｘ－０．３４８７ｘ＋０．６７１２ｘ．
Rhodiola Rhodiola (RhodiolaSachalinensisA.Bor) Changbai Mountain precious rare medicinal plants, known as the gods grass, is the province level protection plants. In this paper, the annual response of Rhodiola sachalinensis seedlings to nitrogen, phosphorus and potassium in Longjing area was described. The quadratic regressive rotation combination design of orthogonal zone was used to carry out the experiment. The results showed that the difference of root length and root weight was significant, Not much, barren and appropriate application of nitrogen and phosphorus can promote root growth, the model is: Y root weight = 8.7695-0.8332x1-1.2026x2-0.7228x3-0.6563x1x3-0.2962x-0.3487x +0. 6712x.