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土壤之所以盐渍化,土体内有盐是根本,气候干旱是前提条件,地下水是动力,地形造成盐分的移运,土壤质地影响盐分积累的性能,情况因地不同,矛盾因时而异,人类的经济活动更增加其复杂性。总结各地防治盐渍化的成功经验,关键在于摸清影响盐渍化各个因素的特征,掌握其相互联系,遵守因地因时制宜的原则,从实际出发,看势量力辨事,正确地贯彻中央“以防为主,防治并重,以水为纲,综合治理,群众经验,科学指导”的方针。 近年来,我国北方各地自流灌区多发生不同程度的次生直渍化问题。在防治对策上,“恶水
The reason why the soil salinization, soil salt is fundamental, the arid climate is a precondition, groundwater is power, the terrain caused by salt transport, soil texture affect the performance of salt accumulation, the situation varies from place to place, the conflict varies, the human The economic activity adds even more complexity. Summarizing the successes and failures of salinization prevention and control in various places, the key lies in ascertaining the characteristics of various factors affecting salinization, mastering their interrelationships, observing the principle that local conditions should be adapted to the times, proceeding from reality, We must implement the principle of “giving priority to prevention, putting equal emphasis on prevention and treatment, taking water as a key link, comprehensive management, the masses’ experience, and scientific guidance”. In recent years, secondary irrigating problems occur in different degrees of gravity irrigated areas in northern China. In the prevention and control measures, "evil water