营口地区位于辽河下游,土地辽阔,有大面积盐碱土的分布,地势低洼盐碱,土质瘠薄,是我省重要的水稻产区。目前全区耕地面积为三百二十多万亩,其中水田面积为一百六十万亩。在毛主席革命路线指引下,在“农业学大寨”群众运动中,由于大搞了农田基本建设,平整土地,不断提高条田标准,使土壤盐分显著下降。但因连年种稻,有机肥料不足,长期施用化肥,将不可避免 Yingkou area is located in the lower reaches of the Liaohe River, the vast land, a large area of ​​saline-alkali soil distribution, low-lying low salinity, infertile soil, is an important rice producing areas in our province. At present, the entire arable land area is more than 3.2 million mu, of which paddy fields cover 1.6 million mu. Under the guidance of Chairman Mao’s revolutionary line and in the campaign of “learning from agriculture in Dazhai”, as a result of engaging in basic farmland construction, leveling the land and constantly raising standards of the fields, the salt content of the soil dropped significantly. However, because of successive years of rice, organic fertilizers, long-term application of fertilizers, will inevitably