温度因子与樟子松球果产量丰产的关系

Relationship between High Yield in Cone Production for Pinus sylvestris var.mongolicaand Temperature Factor

为了分析温度因子与樟子松(Pinus sylvestnis var.mongolica Litv.)球果产量丰歉产之间的关系,设置3块面积为150m×300m的样带,连续6年对样带内单株樟子松的结实量和月平均温度进行调查,结合以上数据,逐年进行处理,采用因子筛选法和线性回归分析,进行温度因子与樟子松球果产量的相关系数分析。结果表明:球果生长期第3年3月份月均温、第2年11月的极端最高温度与樟子松球果产量之间的相关系数颇高,回归关系显著。

In order to analyze the relationship among temperature factor ,high yield and low yield in cone production for Pinus sylvestris var .mongolica ,three sample plots were set in the study area ;the cone production and the monthly mean temperature were investigated for six consecutive years ;combining the above data ,analyzed year by year;correlation coefficient analysis be-tween temperature factor ＆amp; yield of cones were conducted by using factor screening method ＆amp; linear regression analysis .Re-sult shows that ：the correlation coefficient among the monthly mean temperature in March in the 3rd year of cone growing stage ,extreme temperature in November in the 2nd year ,the yield among the cone production of Pinus sylvestris var .mongol-ica is quite high and its regression relationship is significant .