早结果,早丰产,是经济林栽培的主要目标。影响经济树种结果早晚的因素主要有树种、品种的生长结果特性、立地条件和栽培管理措施等。因此,实现早期丰产,必须围绕这些方面采取相应的措施。一、选用良种壮苗良种是早期丰产的基础。良种不仅品质优良,而且一般都具有早期丰产性。例如,核桃良种辽选1号,个大、皮薄、品味好,嫁接当年成花,第二年结果,第4—5年即可丰产,其二年实生苗就能见果。而一般品种的核桃7—8年才能结果。壮苗是指根系发达,地上部分的高度、粗度达到标准的苗木。嫁接苗 Early results, early yield, is the main goal of economic forest cultivation. The factors affecting the economic tree species sooner or later results mainly from the tree species, the growth characteristics of the species, site conditions and cultivation management measures. Therefore, to achieve early harvest, we must take corresponding measures around these aspects. First, the selection of seedling seedling seedling is the basis for early high yield. Not only good quality seeds, but also generally have early high yield. For example, Liaohe walnut varieties on the 1st, a large, thin, good taste, grafting year into flowers, the second year results, 4-5 years to yield, the second year of seedlings will be able to see fruit. The general varieties of walnuts 7-8 years to result. Strong seedling refers to the developed root system, the height of the above ground, the roughness of the seedlings to the standard. Grafted seedlings