摘要
南斯拉夫共有杨柳树林地15万公顷,仅占森林面积的1.5％,但其木材产量却占全国木材总产量的8％。杨木产量由1950年的10立方米,提高到1985年的120万立方米,增加了11倍,成为当今国际杨树委员会的重要成员国之一。该国杨树发展速度之所以快,与其有一支稳定的科研队伍密切相关。本文较详细地介绍了南斯拉夫杨树育种的成就和经验,并结合我国的实际情况,提出了作者的看法和建议。
Poplar and willow forests in Yugoslavia have an area of 150,000 ha, be-ing 1.5% of the national total, but the timber output is 8% of the gross national pro-duction. The production of poplar timber in 1950 was 100,000m^3 and reached 1.2 mil-lion m^3 in 1985. Achievement was magnificent, because the timber output was 11times that of 1950.This paper gives a detailed description of the achievements and ex-p eriences of poplar breeding (especially poplar of the Aigeiros Section) inYugoslavia.Poplars of the Aigeiros Section developed rapidly in Yugoslavia, whereresearches had been conducted on cross breeding, mutation breeding, and diseaseresistant tree breeding. Moreover, researches were conducted on the law of varia-tion of stem form, law of variation of basic wood density, and the law of variationof isoenzymes, providing data for poplar breeding. Now there are 16 clones of theAigeiros Secton.Some of them have been extended, and some of them are being test-ed. Poplars of the Leuce Section develop slowly, because of their low heritability,difficulty in vegetative propagation and rarity of productive stands. Better resultshave been obtained in the willow (especially Salix alba) breeding. 18 willow cloneshave been registered,and are being tested. Suggestions are made in this paper that inrespect of reality in China, basic researches on poplar and willow breeding shouldbe strengthened (e.g.researches on the genetic basis of parents selected for cross com-bination should be strengthened) and personnel, materials and financial supportshould be guaranteed, so that new good tree varieties may be developed and plantedat suitable sites.
出处
《世界林业研究》
CSCD
北大核心
1991年第4期38-49,共12页
World Forestry Research
