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本文叙述在庇荫条件和光照条件下,红松幼树营养特点的研究。于1984—1986年每隔10—15天定期地测定了红松枝叶的鲜重和干重,并分析了营养元素的含量。结果表明,在庇荫条件下幼树有正常的N、P、K、Cu等元素的含量,有较低的Ca、Fe元素含量和较高的Mn元素含量。由于生长季中期对营养N、P、K等元素感到不足。因此,在营林过程采取相应的技术措施以改善营养状况是加速幼树生长的途径。
This article describes the shade conditions and light conditions, the Korean pine young tree nutrition characteristics. The fresh weight and dry weight of the branches and leaves of Korean pine were measured regularly every 10-15 days from 1984 to 1986, and the contents of nutrients were analyzed. The results showed that saplings had normal content of N, P, K, Cu and other elements in sheltered trees, lower content of Ca and Fe and higher content of Mn. Due to the mid-growing season on nutrition N, P, K and other elements feel inadequate. Therefore, taking appropriate technical measures to improve the nutritional status during silviculture is a way to accelerate the growth of saplings.