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通过长期的飞播造林实践证明:1)在库布齐沙漠西段半荒漠地带高大沙丘设置间距4m平铺行列式沙障和间距6m直立行列式沙障,飞播植物成苗率分别为45.6%和46.2%,比其它类型沙障区的成苗率高出8.9%～30.2%,比未设沙障的对照(CK)区高出36.5%～37.1%。2)种子包衣丸化处理后,沙丘迎风坡等不易落种地段的落种量比对照(CK)提高了59%～86%;在成苗率方面,比裸种提高了13.02%;在生长量方面,包衣丸化种子播后15d,其平均根长、平均侧根数、地径、苗高分别比裸种提高了11.93mm、0.9条/株、0.29mm、3.24mm。3)在库布齐沙漠腹地,采取综合措施的地面破土效果最好,成苗量可达对照区的6～8倍。
The results of long-term aerial seeding afforestation show that: 1) Four-mined tiled sand barriers and upright determinant sand barriers with spacing of 4 m are set in the tall sand dunes of the semi-desert zone in the western section of the Kubuqi Desert. The seedling rates of aerial seeding plants are 45.6% and 46.2% higher than those in other types of sand barrier areas, 8.9% -30.2% higher than those without CK, and 36.5% -37.1% higher than those without CK. 2) Seed coating pelleting treatment, sand falling windward slope and other hard-to-drop seedling section than the control (CK) increased by 59% to 86%; in the seedling rate, increased by 13.02% than the naked species; in the In terms of the amount of growth, the average root length, average number of lateral roots, diameter and seedling height of coated pelleted seeds increased by 11.93mm, 0.9 piece / plant, 0.29mm and 3.24mm respectively compared with the bare ones. 3) In the hinterland of the Kubuqi Desert, the ground-breaking effect of the comprehensive measures is the best, and the seedlings can reach 6 to 8 times of the control area.