【作者】 李长斌；

【导师】 穆立蔷； 王振宇； 李玉；

【作者基本信息】 东北林业大学 ， 林业， 2004， 硕士

【摘要】 为搞清活性保水剂对沙漠化土壤改良的效果，将植物秸秆制成具有强吸水功能的植物纤维素。同时，引用固氮菌、纤维素降解酶等多种微生物，制成活性保水剂，并将其与常规树脂保水剂对模拟沙化土壤改良效采进行了分析对比，分别对土壤密度、酶以及微生物的影响进行了研究，得出生物保水剂可以提高酶的活性，使土壤微生物的生育率提高17.0％，土壤密度降低了2.9％，具有改良荒漠化土壤的效果。 在植树造林过程中，长期施用传统保水剂会对土壤造成污染，而活性保水剂可以促进荒漠化土壤的腐殖化，加速土壤团粒结构的形成，从而改变土壤的理化性质。 本课题采用羧甲基纤维素、秸秆以及两者的混合物配成不同浓度的保水剂与激素、复合氨基酸、辅霉A和三磷酸腺苷的混合物配成不同的溶液，按正交试验的方法进行造林对比试验，通过测定苗木的生理指标和生长指标，找出最优保水剂型，为土壤改良和植树造林提供科学依据。更多还原

【Abstract】 In order to understand the effect of the activity of super Absorbent Polymer on the improvement of desertification, the cellulose which can absorb water strongly was made from plant stovers. At the same time, many kinds of microorganism such as nitrogen-fixing, bacteria, cellulose degrading enzymes were used to made into super Absorbent Polymer (SAP). The effects of these SAPS and traditional ruin SAP were compared and analyzed. The effects on soil density, enzymes and microorganism in the soil were studied respectively, The results are as follow: The SAP which has the effect of improving the desertification may increase the enzyme activity, increase the fertility rare of microorganism in the soil by 17.0%, and decrease the soil density by 2.9%.Traditional SAP will result in the pollution of soil in the long-term utilization during the forestation. However, SAP may promote the extent of soil humus, increase the formation of soil gathering structure, so it is necessary for changing the physical and chemical character of soil.Different concentration of SAP were made with the carboxymethyl cellulose, plant stovers and the mixture of them, then they were mixed with the mixture of hormone, compound amino acid, aceltyl coenzxyme A and ATP. Forestation experiments were compared according to orthogonal method. The best kind of SAP was found by determining the physiological index and growth index. The present study provides scientific basis for soil improvement and forestration.更多还原