马尾松种源试验及其利用的研究

对马尾松地理种源四个试验点的64个马尾松种源,进行了生长发育及适应性的研究。初步摸清了马尾松在河南的变异规律。通过主分量分析、聚类分析,对参试种源进行了种群的划分,区分出南、中、北三个地理带和六大种群。用综合评定法,评选出14个适合河南生长的优良种源,其六年生的树高、直径、材积分别比本省对照种源大18.6%、17.1%和58.4%,增产效益显著。同时为河南马尾松造林区提出了种子调拨意见,明确了我国马尾松的优良种源区。

A Research of the Test of Seed Sources of Conifer Chinese(Pinus massoniana Lamb)and Its Application

This paper deals with the problems of growth,development and adaptationof the 64 species of Pinus masseniana.Through the test of geographic seed sou-tees we have been clear basically the variable laws of the species(P.massonia-na)in Henan province.We found that the characteristics of the species are dif-ferent in their height,diameter and volume,and the differences are significant.The 64 species of P.massoniana are divided into three geographic belts:Sou-th,Middle and North,and six principal populations through the analysisof several variables.The 14 superior species have been selected by the method ofsynthesis review.Of the 14 species,there are 6 year old trees whose heightdiameter and volume are 18.6%,17.1% and 58.4% more than those of the co-ntrol species in Henan respectively. The efficiency in increasing output is conspicuous.The selected species allbelong to the Middle geographic belt.In the other hand,the suggestion of transposition seeds of P.massoniana havebeen made for the regions of offovestatin in Henan province.The study willoffer scientific evidence for popularizing the superior species in Henan province.The experimental sites have been set up in the regions of Tapieh and Tungpaimountains in Shinyan and Tungpai counties of Henan province.