长白落叶松苗最佳密度的小气候研究(Ⅰ)——长白落叶松苗群体的太阳辐射分布状况

Study on the Microclimate of Larix olgensis Seedlings under Optimum Density(Ⅰ) The Solar Radiation Distribution in the Community of Larix olgensis Seedlings

本文总结了对长白落叶松苗期不同密度的小气候环境的定量测定数据、生物生长量的研究,得出长白落叶松苗最佳密度为600～700株/m^2时群体叶面积指数为2.2,光能利用率为0.26～0.30,太阳透过系数为0.5左右。并建议:将合格苗分为三级,按级加大差价,提高培育伏苗积极性。

This paper gives out some quantitative data on the microclmate of L. olgensis seedlings under different densities. The result is that under the optimum density of 600～700 N/ha, the leaf area index of the seedlings community is 2.2, the solar energy utilization rate is 0.26～0.30. and light penetration index is about 0.5. A suggestion is made to grade the required seedlings.