旱砂地柠条种子直播与植苗造林对比试验研究

Comparative Afforestation Between Direct Broadcasting and Seedling Planting of Caragana intermedia in Dry Sand Land

在白银市荒漠区景泰县芦阳镇红光村选择旱砂地,用春季植苗和雨季直播2种方式进行造林试验。结果表明,2种方式造林的成活率、保存率差异不大,雨季直播苗木前3年生长较慢,进入第4年生长量超过了植苗造林,新梢生长量最高可超过春季植苗造林的25.2%。成本分析表明直播造林成本远远小于植苗造林,建议旱砂地柠条造林采用雨季种子直播方式。

Two methods of afforestation experiment which are spring seeding and rainy season direct planting were carried out in dry sand land of Hongguang village in Luyang town, the desolate area of Baiyin. The reasult showed that： the survival rate of two ways afforestation difference is not big, the first three years of rainy season live seedling growth were slower, the 4 th annual growth exceeded the seeding afforestation, new shoots up by more than 25.2% of the spring seeding afforestation. The cost of direct planting is far less than that of planting seedings based on the cost analysis, so that afforestation of drought-sandy land should be adopted in the rainy season.