灌区土壤次生盐碱化的预报和预防,就是在认识和掌握灌区土壤次生盐碱化发生发展规律的基础上,预先估计其发生发展的可能性,进而提出预防的措施。有了准确的预报做耳目,就可能使土壤次生盐碱化的预防工作有准 The prediction and prevention of soil salinization in irrigation area is based on the understanding and master of the occurrence and development of soil secondary salinization in irrigated area. It is estimated the possibility of its occurrence and development in advance, and then put forward preventive measures. With accurate forecasting, it is possible to make the prevention of secondary salinization of soil work