在以往的研究中，主要是以养分平衡方法来开展对玉米施肥方面的研究，并多停留在理论与机理上的探讨，缺乏具体性、时效性与系统性的研究，没有更多地将新技术、新方法应用到研究中去。
The nutrient balance method was mainly researched on maize fertilizer in the old researches, and most of them stay the level of theory and mechanism without concrete, timely and system research.
均年竹林与大小年竹林相比，养分消耗多，积累少，施肥没有明显持续效应。
Contrast with the rich and poor year bamboo forest, common bamboo forest exhausted more soil nutrient and has no-obvious residue effect of fertilization.
小麦对多环芳烃菲的吸收与无机养分的吸收之间存在协同效应，且DOM可促进这种协同效应。
A synergism was also found between wheat uptakes of phenanthrene and inorganic nutrients, Moreover, DOM accelerated markedly the synergism.
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