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农业是国民经济的基础。随着国民经济的不断发展,农业生产在持续增产的基础上,必须有一个新的进展。当前,除了在高产田上下功夫提高产量外,改造中低产田是挖掘增产潜力的重要途径。所谓低产田,是指由于土壤质地低劣,水利条件较差,采用一般的农业措施难以增产的田地。扬州市低产田主要有圩区的塘心田,冲地的冷浸田,山区的坡耕地,平原的龟背田、实心地以及盐碱地、砂礓地等。塘心田和冷浸田,地势低洼,终年积水,淤泥层深厚,没有结构,土壤性冷,有毒物质多,有机质和含氮量等潜在肥力虽高,但不易矿化分解,有效利用率很低。山区冲田主要是潴育型水稻土的马肝土,长期受水渍影响,粘粒大,缺磷少钾。山区岗田和高塝田,以渗育型水稻土的黄泥土种为主,
Agriculture is the foundation of the national economy. With the continuous development of the national economy, new progress must be made on the basis of sustained increase in agricultural production. At present, in addition to working hard in high yield fields to increase output, the transformation of middle and low yield fields is an important way to tap the potential for increasing production. The so-called low-yield field refers to the field due to poor soil texture, poor water conditions, the use of general agricultural measures is difficult to increase the yield of the field. The low-yielding fields in Yangzhou mainly include ponds and ponds in polder areas, cold-dip fields in red areas, sloping farmlands in mountainous areas, turtle fields in plain areas, and solid ground areas such as saline-alkali land and sand and sand. Tang Xin Tian and cold dip field, low lying, year-round water, deep silt layer, no structure, cold soil, toxic substances, organic matter and nitrogen potential potential fertility is high, but not easy to mineralization and decomposition, the effective utilization rate is very low. The main part of the mountainous area is the liver of marshland paddy soils, which are affected by water and soil erosion for a long time. Konggan and Gaoquoda in the mountainous area are dominated by the yellow muddy soil of infiltration type paddy soil,