由于松树适应性强,生长快,经济价值高,所以我国的松树资源十分丰富,分布很广。随着松树人工林的不断发展,对松苗质量和产量提出了更高的要求,因此如何培育优质高产的松苗,这是生产和科技部门都很关心的问题。苗圃施肥是近代育苗技术措施中的重要一环,各地对不同树种的施肥种类、时间、 Due to the adaptability of pines, fast growth and high economic value, the pine resources in our country are very rich and widely distributed. With the continuous development of pine plantations, the quality and yield of pine seedlings are put forward higher requirements. Therefore, how to cultivate high-quality and high-yield pine seedlings is an issue of great concern to the production and technology departments. Nursery fertilization is an important part of modern nursery technology measures, all over the different species of fertilizer types, time,