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直播造林效率高,费工少,成本低,方法简单,是适于地广人稀的沙区进行固沙造林的好方法之一。盐池地处于草原向荒漠的过渡地带,年雨量仅300毫米左右,为了加快造林速度,研究直播造林问题,具有重要意义。我们在盐池长城大队对直播造林技术作了试验,1975年7月底直播240亩柠条、花棒,76年调查播种行,柠条每米保苗5.7株,高24.6厘米;花棒每米保苗0.73株,高36厘米。77年7月底播种柠条,每米播种行有苗9.6株,高4.1厘米,花棒每米播种行有苗4.6株,高2.7厘米。通过实验初步掌握了直播造林的主要技术关键
The direct afforestation has the advantages of high efficiency, less labor cost, low cost and simple method, and is one of the good methods for sandification and afforestation suitable for sparsely populated sandy areas. Yanchi is in the grassland to the desert transition zone, the annual rainfall is only about 300 mm, in order to speed up afforestation, the study of direct seeding afforestation, of great significance. We were in the Yancheng Great Wall Brigade on afforestation live technology trials, broadcast by the end of July 1975 240 acres of Carambola, Hualian, 76 years of investigation sowing, seedlings of Caragana per meter 5.7, height 24.6 cm; Strain, 36 cm high. Caragana seeding at the end of July 77, at the end of each year there are 9.6 lines of planted seedlings with a height of 4.1 cm. There are 4.6 lines of planted seedlings planted per acre in Hualian, 2.7 cm high. Through experiments, we mastered the key technical points of direct seeding afforestation