柳杉种子败育率数量化预测模型研究初报

On the Quantized Forecasting Model of Japanese Cedar Sterile Seeds

作者采集181个标准地的柳杉种子,测定种子败育率,用7个对败育种子形成具有较大影响的因子,应用数量化理论I,建立种子败育率的预测模型。经复相关系数的t检验表明模型呈极显著相关,可用于种子败育率的预测,并进行得分范围和偏相关t检验,结果林龄、郁闭度、坡向、坡位和土壤肥沃度是影响种子败育最重要的因子,而林分组成对种子败育有一定影响。为建立种子园和选择采种林分提供参考。

The author collected 181 portion seeds of Japanese cedar in the sample plot and determined the rate of sterile seeds. According to the quantitive theory Ⅰ, the author set up the forecasting model of the rate of sterile seeds, using seven factors which have great influence on the formation of sterile seed, indicating that T-test for the multiple correlation is notable and it can forecast the rate of the sterile seeds. The result of T-test for the partial correlation coefficients is that the age of the stand, the canopy density, slope orientation, the slope's position and site quality are the most important factors in the formation of the sterile seeds. The composition of stand had also certain effects on the important factors of its formation. The result of the research provided important basis for the garden building of the Japanese cedar and the selection of seeds in production.