不同秸秆处理方式下芦苇对盐碱地改良效果研究

Study on Improvement Effect of Reed on Saline-Alkali Land under Different Straw Treatment Methods

摘要: 通过模拟盐碱地野外环境条件，研究了不同年限下种植芦苇的富集盐分的能力及不同还田方式对盐碱土的影响，结果表明：种植芦苇对盐碱地的改良具有较好的效果，种植10年后，各处理的土壤pH值较初始值下降约1.0，土壤电导率较初始值下降约900 μS/cm，其中土壤pH随种植年限增加平缓下降，土壤电导率的降低主要集中于种植前期，后期变化不大。不同还田方式对芦苇的盐碱地改良效果影响主要表现在首年种植，种植年限增加后，3种还田方式间的土壤pH和电导率无明显差异。

Abstract: By simulating the environmental conditions of saline-alkali land, the ability of planting reeds to replenish salt in different years and the effect of different returning methods on saline-alkali soil were studied. The results showed that planting reed had good effect on the improvement of sa-line-alkali land. After the year, the pH value of each treatment soil decreased by about 1.0 com-pared with the initial value, and the soil conductivity decreased by about 900 μS/cm compared with the initial value. The soil pH slowly decreased with the increase of planting years, and the soil conductivity decreased mainly in the early planting stage. The change in the later period is not big. The effects of different returning methods on the improvement of saline-alkali land in reeds were mainly manifested in the first year of planting. After the increase of planting years, there was no significant difference in soil pH and conductivity between the three returning methods.