摘要
利用马尾松优良种源区的优良林分改建母树林 ,经疏伐后 ,保留母树的优良木达85% ,在 1～ 3年内种子产量比对照依次提高 56 .5% ,88.6 % ,1 84 .2 %。母树林的子代林木生长良好 ,树高、胸径、材积和冠幅的生长性状比对照分别提高 5.4 % ,4 .0 % ,4 .1 % ,4 .2 %。干形改良较为明显 ,通直度比对照提高 8.5%。改建母树林的技术简单 ,成本低 ,投产早 ,见效快 。
Superior stand which was in the superior seed source area of Massons pine was rebuilt to seed stand. After thinning, the superior seed trees take 85% in the stand. In the first three years, the seed output increased 56.5%, 88.6% and 184.2% contrasted to control. In progeny test, height, DBH, volume and crown breadth of the seed stand increased 5.4%, 4.0 %, 4.1% and 4.2%, and the stem form was also improved. This constructing technology is simple and low cost, put into production early and produced an instant effect, so it is an effective measurement in producing superior seeds.\;
出处
《广东林业科技》
2002年第1期12-18,共7页
Forestry Science and Technology of Guangdong Province
