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刺槐林质好,生长快,分布广,适应性强,是苏北主要造林树种之一.为了尽快实现林木良种化,我们沿黄河故道两岸,选择优树,在张圩林场采用封闭催根育苗,成活率达96%,苗木生长较旺盛.现将做法介绍如下:一、插池设置在背风向阳的地方,东西向挖深0.5米、宽1米的沟.沟内灌足水,铺一层湿沙.二、剪取根穗一般在3月初,剪取选定优树的插根.粗度为0.5—2厘米,长度为15厘米.剪好的根,要按大小头顺序放,并分级,分无性系,以备扦插.三、插根时间3月上旬至4月初.四、扦插方法在插池内的湿沙上开沟,将插根大头向
Robinia pseudoacacia forest is good, fast growth, wide distribution, strong adaptability, is one of the main afforestation species in northern Jiangsu.In order to achieve forest tree planting as soon as possible, we select the best tree along the old course of the Yellow River, , The survival rate of 96%, seedlings grow more vigorous now introduce the practices are as follows: First, the pool set in the leeward sunny place, digging depth of 0.5 meters east-west, 1 meter wide ditch. Layer of wet sand.Second, cut the root panicle is generally early in March, cut the selected superior tree root.Roughness of 0.5-2 cm, length of 15 cm.Scissors root, according to the size of the first order to put, And graded, divided into clones, in preparation for cutting .In three, the rooting time in early March to early April .In four, the cutting method in the wet pool ditches in the pool, will insert the bulk of the head