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核桃楸是东北地区三大硬阔叶树种之一,材质优良,纹理美观,经济价值较高,用途广泛.生长较快。近年来栽培面积不断扩大,但由于对其适生条件没有足够的重视,很多地区核桃揪人工林成材率不高.生长势早期就开始衰退。为了探讨其适生条件,几年来在辽东、辽北、辽中地区选设了80块样地进行测试,进行单因子分析,并用数量化理论I进行电算.结果表明土层厚度,有机质含量,土壤湿度对其树高生长起决定性作用。以上述三个立地因子为基础编制了核桃揪人工林立地指数类型表,可供生产.教学参考。
Juglans mandshurica is one of the three hardwood broad-leaved species in northeastern China, with good material quality, beautiful texture, high economic value, wide range of uses, and rapid growth. In recent years, the cultivation area has been continuously expanded, but due to lack of adequate attention to its suitable conditions, the yield of walnut in many areas is not high, and the growth potential begins to decline early in the year. In order to explore its suitable conditions for living, in the past several years, 80 plots were selected for testing in Liaodong, Liaobei and Liaozhong areas, and single factor analysis was carried out, and the calculation was carried out by using quantitative theory I. The results showed that soil thickness, organic matter content , Soil moisture plays a decisive role in the height growth of trees. Based on the above three site factors, the Walnut Rowan plantation site index type table was prepared for production.