沙地樟子松的结实规律

The Law of Seed Harvest of Scotch Pine in the Sandy Area

根据在红花尔基林业局所设样地 10a间的调查资料 ,对沙地樟子松的结实规律进行了分析 ,根据不同年度间球果产量的差异显著性和标准误差 ,确定了划分樟子松球果产量丰年、欠年及平年的标准。采用这一标准可以得出 :沙地樟子松连续两年为丰年或欠年的概率很小 ,但可连续两年为平年 ,这一结论可为采种规划提供科学的参考。

Based on the investigation data for nearly ten years from the sample plots located in Honghuaerji Forestry Bureau, the mechanism of cone production of Scotch pine in the sandy area was analyzed. The criterion of full year, poor year and normal year of cone production was established according to the differential significance and standard error. By applying this criterion, it is concluded that the probability of two continuous full years or poor years for cone production is very little. But the situation of two continuous normal years exists. This conclusion can provide a good reference for cone collection.