延安地区飞播柠条28,700亩,取得较好成效。许寨子播区有苗面积率达69.6%,平均每亩938株,出苗率5.1%。1976年白石嘴飞播四年生柠条成苗率较好的地段,目前己形成成片的幼林地,一般株高70—100厘米,最高可达130厘米。据调查,飞播柠条在撩荒地,农地或经过整地的人工造林地的成苗率较荒山高。这是由于土壤疏松遇雨后柠条种子易自然覆土;能较快发芽出苗。 In Yan’an, 28,700 hectares of kelp were sown and achieved good results. Xu Zhai sub-area has a seedling area rate of 69.6%, an average of 938 plants per acre, emergence rate of 5.1%. In 1976, Baishizhixian broadcast four-year-old Caragana seedlings into a better area, has now formed a piece of young woodland, the general plant height of 70-100 cm, up to 130 cm. According to the survey, aerial sowing of Caragana in the abandoned land, agricultural land or after artificial land preparation site than the barren mountain. This is due to loose soil Caragana seed easily natural casing; to sprout emergence faster.