山楂树具有早果、丰产、适应性强的特点。在一般管理水平下,三、四年结果,十年进入盛果期,株产可达500公斤。果实营养丰富,含钙量居水果之首,Vc含量仅次于枣,因此,普遍受到人们的青睐。近几年我区不少地方引种了山楂树,但通过对2000余株的调查表明,大部分生长不良,主要有以下三种情况: 一、幼树在生长初期即出现大量黄叶,有的还出现白叶,日晒后焦枯、死亡,大树新梢普遍显淡黄色。约占调查数的20％左右。 Hawthorn has the characteristics of early fruit, high yield and strong adaptability. In the general management level, three or four years results, ten years into the flourishing period, strain up to 500 kilograms. Nutritious fruit, calcium content in the first fruits, Vc content second only to jujube, therefore, generally favored by people. In recent years, many areas in our district hawthorn introduced, but the survey of more than 2,000 strains showed that most of the poor growth, mainly in the following three situations: First, young trees in the early growth of a large number of yellow leaves, and some There are also white leaves, after the sun coke dry, dead, big tree shoots generally pale yellow. About 20% of the survey number.