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为 落实党和 国家关于 再造一 个山川秀 美的 大西 北和 黄土 丘陵 区 退田 还林 、封 山绿 化的战 略决策 ，依据多年 试验研 究和实践 结果，对 加速植被 建造的 有关问题 作了论述 。认为首 先要提 高对植被 建设重 要性的认 识，强化 全民的生 态意识 和可持续 发展战略 思想，下 决心改变 广种薄 收习惯， 退田还林 还草；重 点论述了 林草植 被建 设的 有关 科学 技术 问 题；提 出 依据 植被 地带性 分布规律 ，在不同 地区选择 相应地 带性植被 优势种 作为造林 种草主要 树草种 ，建造复层 混交植 被是提 高造林种 草成效的 关键。
In order to implement the strategic decision made by the Party and the state on rebuilding a beautiful mountainous area in Northwest China and the Loess Plateau, it has elaborated the relevant issues of accelerating the construction of vegetation on the basis of years of experimental research and practical results. It is believed that we must first raise awareness of the importance of vegetation construction and strengthen the ecological awareness of the entire people and the strategic thinking of sustainable development. We will make every effort to change the habit of broad-leaved forests and to turn back the fields to forests and pastures. We will focus on the scientific and technological issues related to the construction of forest and grass vegetation. According to the law of zonal distribution of vegetation zonation, we chose the dominant species of zonal vegetation in different regions as the main species of tree species for afforestation. The key to improving the success of afforestation is to build mixed layer mixed vegetation.