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东辛农场位于江苏省灌云县东北部,属海湾泻湖相沉积平原,耕地面积13.3万亩,约占总土地面积的46%。建场前,是一片盐碱荒滩,建场后,经过三十多年的改良利用,已取得了较显著的成效。从第二次土壤普查(1979—1982年)的11453个土壤化验分析结果可以看出,有机质和含氮量能列入Ⅰ、Ⅱ级(按江苏省第二次土壤普查养分分析标准)者,分别占耕地总面积的82.9%和89.9%,C/N比值9.6-12,氮素释放率8—10%,说明土壤供氮能力已属中上水平。速效钾含
East Xin farm is located in the northeast of Guanyun County, Jiangsu Province, is a Gulf lacustrine sedimentary plain, arable land area of 13.3 hectares, accounting for 46% of the total land area. Before the establishment of the site, it was a salt-saline wasteland. After its establishment, after more than 30 years of improvement and utilization, it has achieved remarkable results. According to the results of 11453 soil tests in the second soil survey (1979-1982), it can be seen that the organic matter and nitrogen content can be classified as Grade I and II (according to the second soil nutrient survey standard of Jiangsu Province) Accounting for 82.9% and 89.9% of the total cultivated land area respectively. The C / N ratio was 9.6-12 and the nitrogen release rate was 8-10%, indicating that the soil nitrogen supply capacity is in the upper-middle level. Available potassium containing