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系统研究了在优良种源区建立白榆无性系种子园实现优质、高产、高效益的综合技术，并运用系统科学的原则，采用综合配套技术，建立了国内外第一个大型白榆种子园。
This paper systematically studied the comprehensive technology of establishing elm seed orchard of elm Ulmus in high provennce area to achieve high quality, high yield and high benefit. By using the principle of system science and using the integrated supporting technology, the first large elm seed orchard .