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以油松、侧柏、中槐等西北干旱地区主要造林树种作研究对象,采用蘸根和土壤施入等几种不同的使用方法,将旱露植保土壤改良保水剂应用于植苗造林和播种育苗,观察在干旱条件下的使用效果和对苗木生长和苗木质量的影响。研究表明,保水剂不同的使用方法对造林成活率、幼苗生长和育苗质量都有显著的影响,在播种育苗中的使用效果比植苗造林好。保水剂的使用效果因使用方法和使用对象的不同有所变化,油松、侧柏容器苗和裸根苗10～20 g/株的使用量,造林效果较好。在使用量比较小(10 g/株)的情况下,保水剂对油松容器苗的生长有一定的促进作用,中槐移栽、造林时使用保水剂,对其成活率影响不大,但在育苗时作用明显。蘸根有助于促进油松、侧柏和中槐幼林的生长和造林成活率的提高,是造林时用保水剂处理苗木的一种较为理想的方法。中槐育苗时,保水剂的使用效果十分明显,拌种后播种最为有效,可以在育苗中加以推广和应用。
The main afforested tree species of Pinus tabulaeformis, Platycladus orientalis, Zhonghuai and other northwest arid regions were taken as the research object. Several different methods were used, such as dipping root and soil application, etc., to apply the improved soil- , Observe the effect of use under drought conditions and seedling growth and seedling quality. The research shows that different methods of using SAP have a significant effect on the survival rate of afforestation, the growth of seedlings and the quality of nursery, and the effect of planting seedlings is better than that of planting seedlings. The effect of using water retaining agent varies with the method of use and the object of use. The amount of 10-20 g / plant of Pinus tabulaeformis, Platycladus orientalis container seedlings and bare rooted seedlings is better. Under the condition of relatively small amount (10 g / plant), the super absorbent polymer can promote the growth of Pinus tabulaeformis seedlings. When transplanting and afforestation, the super absorbent polymer had little effect on the survival rate In nursery obvious role. Dipping roots can help promote the growth of Pinus tabulaeformis, Oriental Arborvitae and Chinese schmoo young plantation, and improve survival rate of afforestation. It is an ideal method to treat seedlings with water retaining agent during afforestation. When the Chinese scholartree seedlings, the use of water-retaining agent is very obvious, after sowing the most effective seed dressing, seedling can be promoted and applied.