【摘要】 以北京南口风沙区人工种植的侧柏苗为研究对象,对造林时施用2种保水剂及其剂量的处理与不同浇水量的对照处理进行了比较,结果表明:在造林初期,施用保水剂可使成活率达90%以上,与浇水量高1倍的对照相差无几,施用2种保水剂后第2年春季土壤含水量比对照提高了84.7~119.4 g.kg-1,2种对照处理的保存率比保水剂处理的降低了7.78~25.56个百分点,从而降低了浇水和苗木补植所带来的成本;同时保水剂的施用也显著地提高了侧柏的初期生长量。研究中所选定的不同保水剂及其剂量对侧柏苗生长的影响差异并不显著。更多还原

【Abstract】 This paper aimed at the influences of two water absorbents on survival rate and growth of Platycladus orientalis under different watering treatments in this area.The results showed that in the early stage of plantation,the survival rate of individual trees with water absorbent treatment at the end of the first year was more than 90%,a little different from the control treatment that had double watering.In the next spring,soil moisture with water absorbent treatment increased by 84.7～119.4 g·kg^-1,which is reflected by 7.78%～25.56% of reduction of survival rate of control treatments compared to water absorbent treatments,it is obvious that the cost on watering and replanting was reduced markedly.In addition,the increment of individual trees increased significantly.The impacts of different water absorbents and their dosages on growth,however,was not significant.更多还原