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关中地区前几年的飞播造林试验,因种种原因没有达到预期的效果。为了使尔后的试验工作少走或不走弯路,避免人力、物力的浪费,提高飞播造林的可靠性,有认真分析研究失败原因,从中吸取教训的必要。一、试验概况1980年,关中飞播造林试验播区选设在秦岭北坡的低中山石质山区。1981年,试验地扩展至渭北高原黄土区。计先后在宝鸡、凤县、蓝田、麟游、周至等县共设播区8个,总面积22万多亩。各播区成苗情况见表1。林业部与民航总局1979年4月颁发的“飞机播种造林技术规程”中,关于飞播造林效果评定标准见表2。
Airspace afforestation experiments in the Guanzhong area a few years ago did not achieve the expected results due to various reasons. In order to make the later experimental work with less or without detours, to avoid the waste of manpower and material resources, and to improve the reliability of aerial seeding, there is a need to carefully analyze and study the causes of failure and learn from it. First, the test profile In 1980, Guanzhong aerial sowing experimental sowing set in the northern slope of the Qinling Mountains Rocky Mountain. In 1981, the experimental site was extended to Loess Plateau in Weibei Plateau. Count in Baoji, Feng County, Lam Tin, Lin Tour, Zhouzhi County and other counties broadcast a total of 8, with a total area of 220,000 mu. Seedlings of the broadcast area see Table 1. In April 1979 issued by the Ministry of Forestry and Civil Aviation Administration of “aircraft sowing afforestation technical regulations”, on the aerial seeding afforestation effect evaluation criteria in Table 2.