光是植物利用水和二氧化碳制造有机物的重要因素,在正个生长发育过程中都离不开它,那么落叶松人工林光的利用率如何?又怎样才能提高其光能利用率?本文就此谈谈如下看法。一、辐射资源的分布状况黑龙江林区地处中高纬度,年总辐射大约为11～130千卡/厘米~2,适合木本植物生长发育,其年生理辐射亦有60千卡/厘米~2左 Light is an important factor that makes plants use water and carbon dioxide to make organic matter, so it can not be separated from the growth and development of larch plant. So how to utilize the light of larch plantation and how to improve its light energy utilization rate? Talk about the following view. First, the distribution of radiation resources Heilongjiang forest is located in the high latitudes, the total annual radiation is about 11 ~ 130 kcal / cm ~ 2, suitable for woody plant growth and development, its annual physiological radiation also has 60 kcal / cm ~ 2 left