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东峡林区中国沙棘天然种群的表型性状存在有较大程度的变异，通过样方调查，统计分析，其中叶片密度、百果重、种子千粒重三个表型性状存在有分化的趋势。依据表型性状的变异状况和其变异频数分布情况，并针对百果重作了回归分析。通过分析，并进行了种质资源类型的划分，为东峡林区中国沙棘采种基地建设和林区改造提供理论上的依据。ｙ──百果重，ｘ＿１──叶长，ｘ＿２──叶宽，ｘ＿３──叶片密度。从上述方程拟合状态来看，果实大小与单叶的叶面积呈正比，与叶片密度呈反比。对此方程进行适合性检验证明，通过叶的特征可以较好地反映本区中国沙棘百果重的状况，但对变异幅度较大，处于两侧临界状态的拟合差较大。在实际调查中也发现果实大小和叶片密度与叶片大小有此现象。叶片密度小，叶片大的植株呈现为松散、稀疏状态，营养生长与生殖生长处于沟衡水平，果实较大；反之，叶片密度较大，叶片细小的植株，整个植株呈现紧密、严实的状态，营养生长相对旺盛，果实较小。５东峡林区中国沙棘种质资源类型划分由于本区中国沙棘性状存在有较大幅度的变异，以及部分性状存在的分化趋势，这样就有划分类型的可能和必要，对了解现有资源状况和今后的发展建设有着重要意义。选用变异幅度较大，表现比较明?
The phenotypic traits of natural seabuckthorn population in Dongxia forest region showed a large degree of variation. Through the quadrat investigation and statistical analysis, the three phenotypic traits of leaf density, berry weight, and 1000-seed weight tended to differentiate. According to the distribution of phenotypic traits and the variation frequency, regression analysis was made on the fruit weight. Through the analysis and the classification of germplasm resources, it provides the theoretical basis for the construction of seabuckthorn seed-planting base and the rebuilding of forest in Dongxia Forest Region. y ─ ─ hundred fruit weight, x_1── leaf length, x_2── leaf width, x_3 ─ ─ leaf density. From the fitting state of the above equation, the fruit size is proportional to the leaf area of single leaves and inversely proportional to leaf density. The suitability test of this equation proves that the leaf characteristics can reflect the status of Chinese sea-buckthorn berry weight well in this area, but the variation margin is large, and the fitting difference between the two critical states is larger. In the actual survey also found that fruit size and leaf density and leaf size of this phenomenon. Leaf density is small, the leaves of large plants showed loose, sparse state, vegetative and reproductive growth at the ditch horizontal level, the fruit larger; the other hand, the leaf density is larger, the leaves of small plants, the entire plant showed a tight, tight state, Relatively strong vegetative growth, fruit smaller. 5 Classification of seabuckthorn germplasm resources in Dongxia Forest Region Due to the significant variation of seabuckthorn traits in China and the trend of differentiation of some traits, it is possible and necessary to divide the types of seabuckthorn species in China so as to understand the existing resource status And the future development and construction of great significance. Choose a larger variation, the performance is more clear?