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白城地区沙荒面积大,营造薪炭林有广阔的天地,为寻求沙荒地营造薪炭林的适宜树种,我们于一九八○年开展了引种试验。现将三年的初步试验结果,整理如下。一、试验基本概况选沙荒面积比较大的通榆县,四井子公社林场设置了引种试验地。面积共3,780平方米,土壤为风积沙土,有机质含量为1.06％,速效N56PPm,速效P4.5PPm,速效K为13.8PPm。试验树种为沙枣、沙棘、锦鸡儿、胡枝子和紫穗槐,其种源分别为内蒙、青海、辽宁和吉林。一九八○年春,用我所培育的一年生实生苗,人工定点,挖坑植苗造林,每穴植苗一株,株行距为0.5×1.8m。按一般的抚育管理,每年只除草松土两次,未加别的措施。
Baicheng area has a large area of wasteland and a vast world of fuelwood. In order to find a suitable tree species for fuelwood in the desertification, we introduced the introduction test in 1980. Now three years of preliminary test results, sorted as follows. First, the basic situation of the trial Select sand waste area larger Tongyu County, Saijingzi Forest Farm set up the introduction of test sites. A total area of 3,780 square meters, the soil aeolian sand, organic matter content of 1.06%, available N56PPm, available P4.5PPm, available K was 13.8PPm. The test species were jujube, sea buckthorn, Caragana, Lespedeza and Amorpha, and their provenances were Inner Mongolia, Qinghai, Liaoning and Jilin respectively. In the spring of 1808, I nurtured the annual live seedlings, artificial fixed point, digging seedling planting, planting one per hole, spacing of 0.5 × 1.8m. According to the general nurturing management, weeding only twice a year, without any additional measures.