论文部分内容阅读
低产田,是指土壤质地低劣,水利条件较差,农业产量低而不稳,采用一般治理措施难以增产的田地。根据土壤普查资料,扬州市中低产土壤面积436万亩,占总耕地一半左右,这些田中稻单产只有300公斤,小麦单产只有150公斤。本区低产田包括有圩区的塘心田,冲地的冷浸田,山区的坡耕地,平原的蝇背田、实心地,以及盐碱地、砂礓地等。三十多年来,扬州市进行了大面积的圩区沤改旱、平原沙土地区旱改水和丘陵地区冲坝坡耕地改造等低产田的治理,取得了显著的成果,土壤条件水利条件有了较大改善,粮食及经济作物
Low yield field refers to the field of poor soil texture, poor water conditions, low and unstable agricultural output, the use of general management measures is difficult to increase the yield of the field. According to the soil census data, the area of low-yielding soil in Yangzhou is 4.36 million mu, accounting for about half of the total cultivated land. Only 300 kg of these middle-yield rice have a yield of only 150 kg and the yield of wheat is only 150 kg. The low-yield fields in this area include Tang Xin Tian with polder areas, cold-dip fields in red areas, sloping fields in mountainous areas, fly fields in the plain, solidly ground, saline-alkali land and sand and sand fields. For more than thirty years, Yangzhou City has made great efforts in controlling low-yield fields such as polder areas, drylands, dryland water in plain areas and farmland improvement in Chong Hupo areas in hilly areas. The soil conditions and water conditions A major improvement, food and cash crops