摘要
通过在福建省尤溪经营林场种子园和洋口林场种子园开展的４年调查，对可见半面树冠法、信息段法和球果切开法进行了深入的研究，建立了能在一定地域范围内应用的综合预测模型。验证结果表明，所建模型用于种子产量预测，方法简便，精度高。
An investigation at Youxi and Yangkou forest seed orchards from 1991 to 1994 was made to study three seed crop prediction methods: counting number of visible cones in crown from an observation point、 counting number of cones in certain informative section of crown and cone cutting. Prediction models were developed for each method. The results were checked at different seed orchards and showed that the models could be easily and precisely used in certain areas.
出处
《南京林业大学学报（自然科学版）》
CAS
CSCD
1996年第2期9-14,共6页
Journal of Nanjing Forestry University：Natural Sciences Edition
基金
林业部重点
关键词
杉木
模型
种子
产量预测
种子园
Chinese fir
Number of visible cones in crown
Number of cones in informative section
Cone cutting
Prediction model
Seed crop prediction
