亚高山半干旱地带植被恢复保水剂试验研究

Experiment on Compound Super Adsorbent Polymers (SAP) for Vegetational Restoration in Sub-alpine Semi-arid Areas

在亚高山半干旱地带采用四种不同类型的保水剂材料对油松、岷江柏、刺槐、山桃进行了持续三年的田间试验。试验结果表明 ,采用CMS吸水材料、植物生长调节剂、生长素等配制的复合保水剂对亚高山半干旱地带造林树种进行处理 ,可提高苗木成活率、保存率并促进幼苗生长。造林第二年针叶树和阔叶树的平均成活率提高 5 9% ,造林第三年针叶树和阔叶树的平均保存率提高 5 2 % ,针叶树和阔叶树的苗木高生长量平均增加 6 1 7%。经统计检验 ,确认了复合保水剂的不同剂型对苗木成活和生长的影响之差异。

Four forms of compound SAP were applied to three-year lasting afforestation of P.tabulaeformis,Cupressus chengianaa,Robinia psendoacacin and Prunus persca in sub-apline semi-arid areas.The components of the compound SAP included water absorbing and preserving material,regulator and nutritional elements for vegetational growth.The results have shown that by using the compound SAP,the mean survival rate of seedlings rose by 5.9% and 5.2% in the second year and in the third year respectively,and the mean increment of height rose by 61.7% in comparison with the control.By statistical tests,differences of response in survival and growth of seedlings by the treatments of different compound SAP were identified.