论文部分内容阅读
松嫩平原的苏打盐碱土区碱斑呈斑块状分布在草原和耕地中,碱斑的盐分含量和及碱化度均较高,盐碱化强度重,严重制约着农业土地利用。在松嫩平原区域前郭县套浩太乡碱巴拉村吉林农业大学的盐碱土改良实验区内,利用挖出碱斑换入肥沃表土,耕层下部设置有机隔离层(10 cm)的换土改造碱斑的方法,研究对比了近30年前后剖面盐分的实验分析,结果表明经过近30年的时间表土仍未再度盐碱化,作物仍能正常生长,同时底土也有一定程度的淋洗盐分的作用,实践证明这种换土改良盐碱土的方法效果较好。
Alkali patches in the sodas of Songnen Plain are plaque distributed in the grassland and arable land. Alkalite has higher salinity content and alkalization degree, heavier salinization intensity, which seriously restricts agricultural land use. In the Songnen Plain area of Qian Guo Xianju Haotao Township cambara village of Jilin Agricultural University in the saline-alkali soil improvement experimental area, the use of scooped alkali spot into the fertile topsoil, the lower part of the topsoil set with organic isolation (10 cm) The method of rebuilding alkali spot is compared with the experimental analysis of salt profile before and after nearly 30 years. The results show that after nearly 30 years’ time, the soil has not re-salinized and the crops can still grow normally. At the same time, the subsoil also has a certain degree of leaching salt The practice has proved that the method of soil improvement to improve saline-alkali soil is better.