窿缘桉(Eucalyptus exserta)不同密度造林对其生长有一定的影响。为了探讨窿缘桉不同密度造林的生长规律,我们于1979年进行造林试验研究,1982年测定。现将试验情况和测定结果介绍如下。一、试验方法试验地原为窿缘桉皆伐迹地,属浅海沙质土,pH值5.2,全氮含量0.029％,全磷含量0.009％,有机质含量0.796％,土壤比较瘦瘠。造林前机耕全垦整地,开定植沟深40厘米,每株施10斤海泥作基肥。试验总面积90 Eucalyptus exserta afforestation at different densities has some effect on its growth. In order to explore the growth of different density afforestation margin of Eucalyptus, we conducted afforestation experiment in 1979, measured in 1982. Now the test conditions and measurement results are as follows. First, the test method Originally for the margin of eucalyptus margin cut, is a shallow sea sandy soil, pH 5.2, total nitrogen 0.029%, total phosphorus 0.009%, organic matter content 0.796%, relatively lean soil. Cultivation before planting all cultivated land, open planting ditch 40 cm deep, 10 pounds per plant Shihai mud as a base fertilizer. The total area of ​​90