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雪松既是著名的观赏树种,也是珍贵的用材树种.惟目前种子奇缺,进口需要大量的外汇,同时,育苗技术要求高.扦插育苗也有困难.为了在我地大量繁育雪松苗木,近几年来,我们采用黑松作砧木,进行雪松嫁接试验,取得了良好的结果.现报道如下:一、试验地概况试验地设在本场花园内.土壤为重粘土,通气不良,透水性差,易干易湿.pH值8.6—9.4.地下水位春季在1—1.5米之间,夏季在0.5米左右.床东西向,宽1.5米,高20厘米,长13米.二、嫁接试验(一)春季硬枝嫁接 如图1所示.1.嫁接时间:3月15日至3月20日.砧木选择:选2年生黑松实生苗(高15厘米左右,地径3—6毫米),去除基部5
Cedar is both a famous ornamental tree species, but also a precious species of timber species, but the current lack of seeds, the import requires a lot of foreign exchange, while raising the technical requirements of high cutting seedlings are also difficult.In order to breed cedar seedlings in my large number in recent years, We use black pine as rootstock, cedar grafting test, and achieved good results are reported as follows: First, the experimental site to test the general set in the field garden soil is heavy clay, poor ventilation, poor water permeability, easy to dry Wet. PH value of 8.6-9.4. Groundwater level in the spring between 1-1.5 meters in summer in about 0.5 meters bed east and west, 1.5 meters wide, 20 cm high, 13 meters long. Second, the grafting test (a) spring hard Grafting grafting shown in Figure 1. Grafting time: March 15 to March 20 rootstock selection: 2-year-old black pine seedlings selected (about 15 cm high, diameter 3-6 mm), remove the base 5