天津滨海盐土的脱盐碱化及其防治

天津滨海盐土在长期治理过程中由于盐土的脱盐碱化，以及缺少有机肥料和低矿化（高钠）碱性水灌溉等原因，已出现了程度不等的碱化土壤。试验表明，应用有机无机改土剂和增施有机肥、深耕深翻、咸淡水混合灌溉等农艺措施，并与工程措施、生物措施相结合进行综合治理，能收到明显的改良效果。

Desalting Alkalization of Tianjin Coastal Solonchak and Its Control

It has been confirmed that the alkaline soils were formed in coastal solonchak in Tianjin because of the desalting alkalization caused from long-term amelioration,less input of organic fertilizers and irrigation with low mineralized (high sodium contents)alkali water. Experiments indicated that the alkaline soil could be obviously controlled through the integration of engineering practices,biological techniques and agronomic techniques such as application of organic fertilizers and chemical ameliorants, deep ploughing and mixture irrigation with salt water and fresh water.