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近年来在植苗造林中,仍有不少树苗不能成活,个别地方甚至年年造林不见林.对此问题,已有不少强调适地适树、加强保护管理等方面的论述.本文试就苗木水分代谢与植苗造林的问题,提出一此见解,供作参考.一、苗木水分的基本功能水是苗木生命的基础.无论何种苗木,它们生命活动的许多生化合成与分解,酶的控制反应与活性,都只有在水这样一种介质中才能进行.所以,在它们的活细胞质中一般含水分80%以上,细胞壁含水也在50%左右;主要器官树叶,含水可达80～82%,根尖可达70～
In recent years, there are still many saplings in the plantation and seedling afforestation that can not survive, and in some places or even year after year afforestation does not see the forest .There are many expositions on this problem, such as adapting to tree planting and strengthening protection and management, Water metabolism and plantation afforestation, put forward an opinion for reference.First, the basic function of seedling water is the basis of seedling life.No matter what seedlings, many of their biological activity of biochemical synthesis and decomposition, enzyme control reaction Therefore, in their living cytoplasm, they generally contain more than 80% moisture and about 50% water content in the cell wall. The main organs leaves contain 80-82% water, Apical up to 70 ~