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原开封专区二十二个县市,位于黄河以南的冲积平原上,是个轻度老盐碱地区。早在汉朝的汉书“诸洫志”上,作者贾让曾有如下的记载:“若有渠溉,则盐滷下隰,填淤加肥,故种禾麦,更为秔稻,高田五倍,低田十倍”,可见盐碱地的由来已久,距今二千年前就已从事盐碱地的改良工作,但盐碱化程度,较之黄河上游的宁夏、甘肃、青海等西北地区,则又显得较轻。 原开封专区科委会于1961年11月下旬,在虞城县召开了开封师范学院、开封师专、黄河水利学校、中牟农专等校老师,专区农业局、水利局、农科所、气象台,各有关研究所、单位,及各县有关单位技术员、有经验的农民40余人的学术座谈会,探讨了盐碱地形成和发展的原因,专题讨论了盐碱地防止、改良和利用的途径。
The original Kaifeng area twenty-two counties, located in the alluvial plain south of the Yellow River, is a mild old saline area. As early as the Han Dynasty Han Zhu Zhi “, the author Jia had had the following records:” If there is irrigation, the salt brine, fill silt and fertilizer, so the kind of wheat, more rice, Takada Fivefold and tenfold in low field ", we can see that the saline-alkali land has been in existence for a long time. Up to now, the improvement of saline-alkali land has been carried out two thousand years ago. However, compared with the northwestern regions such as Ningxia, Gansu and Qinghai in the upper reaches of the Yellow River, Then it appears lighter. The original Kaifeng Special Area Science and Technology Commission in late November 1961 in Yucheng County held Kaifeng Teachers College, Kaifeng Teachers College, the Yellow River Water Conservancy School, Zhongmou agricultural college teachers, area Agricultural Bureau, Water Conservancy Bureau, Agricultural Sciences, Meteorological Observatory , Relevant academic institutes and units, and technicians from relevant units in counties and 40 experienced peasants, discussed the reasons for the formation and development of saline-alkali land and discussed the ways to prevent, improve and utilize saline-alkali land.