摘要
用信息林法，分层信息技法及气象因子预测法、对黑龙江省林口县青山林场长白落叶松种子园和吉林省汪清林业局亲合林场长白落叶松种子园的结实量进行了相关分析和回归分析，建立了种子产量的预测方程。研究表明：用树冠中层４个信息枝的雌球花数量来预测种子产量准确而省工，并且用中层４个信息枝建立了短期预测方程；从影响种子产量的气候因子的相关分析表明，５、６月份的相对湿度、年蒸发量和≥１０℃年积温对花芽分化及下１年种子产量影响最大，据此建立了用气候因子预测种子产量的中期预测方程。
The correlation analysis and regressive analysis were carried out on seed output of Larix olgensis seed orchard at Qinshang forestry farm and Qinhe forestry farm by the predicting method of informaton tree,information branch and climate factor.And the predicting formula of seed output was set up.The results showed that it was more accurate and economical to predict the seed output by the pistillate strobil numbers on four information branches at the middle of crown.And the short-term predicting formula was set up by this method.The correlative analysis between climate factors and seed output showed that the relative humidity at May and June,annual rate of evaporation and annual cumulative temperature above 10℃ possessed greater effect on flower-bud differentiation and seed output in next year.The middle-term predicting formula of seed output was set up by this method.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1994年第4期8-14,共7页
Journal of Northeast Forestry University
基金
林业部重点课题
