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柠条(Caragana microphylla Lam.)为豆科丛生灌木,根深叶茂,繁殖容易,抗旱抗蚀,保土力强,是陕北黄土丘陵沟壑区营造水土保持林的先锋灌木树种,可解决肥料、饲料、燃料,改良土壤。佳县位于陕西北部,紧靠黄河西岸。除北部为风沙区外,其余均为黄土丘陵沟壑区。群众历来有种植柠条的习惯。1953年前有柠条林两万多亩,到1973年底发展到7.7万亩,占全县造林总面积的70％左右。
Caragana microphylla Lam. Is a cluster of shrubs of legumes with deep roots and leaves, easy propagation, drought resistance and corrosion resistance, strong soil-protecting ability, and is a pioneer shrub species for soil and water conservation in loess hilly and gully regions of northern Shaanxi. It can solve the problems of fertilizer, Feed, fuel, soil improvement. Jia County is located in northern Shaanxi, close to the West Bank of the Yellow River. In addition to the north wind and sand area, the rest are loess hilly and gully area. The people have always had the habit of planting kaffir. Before 1953, there were more than 20,000 acres of Caledonia forest, reaching 77,000 mu by the end of 1973, accounting for about 70% of the total afforestation area in the whole county.