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本文主要根据榆林沙区飞机播种试验协作组从1974—1981年飞播试验的资料,并参考了有关文献,讨论在草原地带流沙地上飞机播种造林的几个技术问题及其成效和展望。国外流沙地飞播造林已有数十年的历史,国内也试验了二十多年。总的来说,流沙地飞播难度比较大,但从发展来看,在技术上还是不断地进展的,而且在如何提高飞播成效的关键性问题上摸索了比较系统的经验,在某些点上甚至可以说有所突破。笔者是试验协作组的成员,除参加总的试验工作之外,为解决沙丘植物风蚀的问题,在飞播量试验方面作了一些试验工作。榆林沙区飞播试验从1958年开始至1981年已有23年的历史,试验资料是极为丰富的,限于笔者水平不可能全面地反映试验的全部成果,特别是某些看法难免有不妥之处,希望读者给予批评和指正。
This paper mainly based on the Yingsha sandy area aircraft sowing experimental group from 1974 to 1981, the flight test data, and with reference to the literature, to discuss the aircraft in the prairie land sowing aircraft seeding a number of technical problems and its effectiveness and prospects. Abroad sand flying aerial afforestation has decades of history, the country has also tested for more than 20 years. In general, flying sands to fly more difficult, but from the development point of view, the technology is still constantly progressing, but also how to improve the effectiveness of the key issues of sowing to explore the more systematic experience, at some point Can even say that there is a breakthrough. The author is a member of the experimental cooperation group. Apart from attending the general experimental work, some experimental work has been done in the seeding test in order to solve the problem of sand dune wind erosion. The Yulin sandy area fly-sowing test has been 23 years since 1958 and 1981, and the experimental data are extremely rich. It is impossible for the writer’s level to fully reflect all the results of the experiment. In particular, some opinions inevitably have some defects , I hope readers give criticism and correction.