苗木的生长离不开土壤,土壤的水、肥、气等条件直接关系到苗木的生长发育状况。在育苗生产过程中,如想连年获得优质、高产、低成本的壮苗,必须加强对土壤性能的研究,进行科学管理。在育苗过程中,从播种或扦插开始,到种子或插穗在土壤中吸水膨胀、发芽,一直到苗木出圃的整个生长发育期间所需要的一切营养物质大都是通过苗木根系吸收的。实践证明,由于苗期的发育阶段不同,苗木对土壤中的水、肥消耗量不一样。根 The growth of seedlings can not be separated from the soil, soil water, fertilizer, gas and other conditions directly related to the growth and development of seedlings. In the process of nursery production, if you want year after year to obtain high quality, high yield, low cost strong seedlings, we must strengthen the research on soil properties, scientific management. In the nursery process, from sowing or cuttings to seeds or cuttings in the soil to absorb water expansion, germination, until the seedlings out of nurseries throughout the growth and development of all nutrients required during the nursery stock through roots. Practice has proved that due to the different stages of seedling development, seedlings of soil water, fertilizer consumption is not the same. root