日本落叶松种子园种用价值测试初析

对我国６个主要日本落叶松种子园种用价值测验的结果表明，各地种子园的遗传品质差异显著。种用价值大小排序为：天麻＞桓仁＞清凉山＞白旗寨＞赤峰＞大孤家＞对照。初选出遗传品质较高的天麻、桓仁和清凉山种子园，６年生（连苗期）幼林树高、胸径、材积生长量可分别获得８４％—１１０％、１２７％—２６７％、２６９％—６６３％的遗传增益。白旗寨、赤峰和大孤家３个种子园虽有一定改良效果，但都低于总平均水平，并与对照差异不显著。研究结果对豫西地区引种和推行种子园种子造林有重要指导作用对我国６个主要日本落叶松种子园种用价值测验的结果表明，各地种子园的遗传品质差异显著。种用价值大小排序为：天麻＞桓仁＞清凉山＞白旗寨＞赤峰＞大孤家＞对照。初选出遗传品质较高的天麻、桓仁和清凉山种子园，６年生（连苗期）幼林树高、胸径、材积生长量可分别获得８４％—１１０％、１２７％—２６７％、２６９％—６６３％的遗传增益。白旗寨、赤峰和大孤家３个种子园虽有一定改良效果，但都低于总平均水平，并与对照差异不显著。研究结果对豫西地区引种和推行种子园种子造林有重要指导作用

Prelimilary Analysis of Seed Value of Larix Kacrnpferi Seed Orchard

The results obtained from 6 main seed orchards of larix kacrnpferi in China tested for seed value indicated that inherited quality varied significiantly among these seed orchards.The quantitative order of seed vaue was Tianma>Huanren>Qingliang Mountain>Baiqi village>Chifeng>Dagujia>CK.The first three seed orchards which had higher inherited quality had been selected for further study and inherited increase in height ,chest-height diameter and wood volume were obtained,repectivelyvby 8 4%～11 0%,12 7%～26 7%,26 9%～66 3%.The other three ones had some improving effect,but lower than the general average level and had little difference from the CK.The results would have instrumental effect on introduction and populazation of afforestation with seeds if the orchards.