在贯彻以营林为基础的林业发展方针中,苗圃的建设和苗木的供应是个关键,我区山区林场苗圃多建立于山区河谷或山坡坡脚处,地形高差大,土地面积小,单位面积投资高,水泥紧张,又远离动力网,且育苗过程中、苗木生长条件要求严格,这些客观条件,使自压喷灌成为一种大有发展前途的灌水方法。 In implementing the forest-based forestry development guidelines, the nursery construction and the supply of seedlings are the keys. The forest nurseries in our mountainous area are mostly built at the foot of mountainous valleys or hillsides. The elevation difference is large, the area of ​​land is small, and the unit area High investment, cement tension, but also away from the power network, and nursery process, the growth of seedlings demanding, these objective conditions, making self-pressure sprinkling irrigation has become a promising method of irrigation.