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近几年来,我国北方一些省区都大力引种和推广种植沙打旺。各地种植情况表明,沙打旺是一种生长快、产量高、适应性强、用途广的优良草种。特别在水土流失严重,土壤瘠薄的黄土高原和半固定沙区大力发展沙打旺对保土、固沙、改良土壤,解决肥料、饲料、燃料,促进农林牧业生产的发展有着一定意义。自1975年开始,我们在延安地区飞机播种造林种草试验中,在吴旗铁边城林场开展了沙打旺人工撒播试验和飞机播种试验。现将飞播试验结果介绍如下: 一、飞播试验区的自然概况试验区设在吴旗县西北部王洼子川西侧,为洛河河源,梁状丘陵沟壑区。播区内海拔1,366～1,650米,梁峁起伏,沟壑
In recent years, some provinces and autonomous regions in northern China have vigorously introduced and promoted the planting of sand and wangwang. The planting situation in all parts of the country shows that Astragalus mongholicus is a kind of fine grasses with fast growth, high yield, strong adaptability and wide application. Especially in the loess plateau and semi-fixed sandy areas where the soil erosion is very poor and the soil is infertile, it is necessary to make vigorous efforts to improve the soil and sand fixation, improve the soil, and solve the problems of manure, fodder and fuel, and to promote the development of agriculture, forestry, animal husbandry and production. Since 1975, we carried out artificial sowing and sowing trials of Astragalus adsurfatus at the Wuyi Tiebian Forest Farm in the trial of aircraft sowing and planting in Yan’an. Now the results of fly-sowing test are described as follows: I. The natural overview of the pilot sowing test area The test area is located on the west side of Wangwazichuan in the northwestern part of Wuqi County. It is the source of the Luohe Heyuan and the beam-shaped hill and gully area. Broadcasting area elevation 1,366 ~ 1,650 meters, beam 峁 ups and downs, gully