延安市直升机播种造林试验初探

Experiment with Aerial Seeding by Helicopter for Afforestation in Yan'an

在延安市吴起、安塞、子长等3县(区)、4播区进行了“小松鼠”直升机飞播造林试验,结果为4个播区中,有2个播区落种粒数达到国标合格标准,有3个播区落种准确率达到国标要求;出苗面积率(有苗样分频度)44.7%,有苗样方频度≥30%,抽样精度均≥80.0%,合格播区3个,合格播区面积2067 hm 2、占调查总面积的75.39%;苗木分布基本均匀,生长良好;“小松鼠”直升机较适宜黄土高原丘陵沟壑区飞播造林作业,今后应改进完善直升机播种器。

Aerial seeding by helicopter for afforestation in Wuqi,Ansai,and Zichang were carried out.Four plots were seeded for experiments.The result showed that two out of four plots reached the international standard of seeds number and three out of four reached the international standard of seeds targeting.The sprouting rate reached 44.7%and quadrat with seedlings reached no less that 30%and sampling accuracy no less than 80%.There were three plots qualified and area qualified reached 2067 hm 2 accounting for 75.39%of inventory area.The seedlings were evenly distributed and grew well.