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旱地耕制改革从六十年代中期开始经历了由麦、玉、苕连作改为间、套种植和由窄行套种演变为中厢带植的发展过程。八十年代已逐步形成了“双三尺”、“双二八”、“三五、二五”等定型的中厢分带轮作制度。这为协调麦、玉、苕三熟作物的矛盾,提高对土地和光,温资源的利用率,促进农田生态的良性循环,实现增产增收取得了显著效果。但这种中厢带植方式相应地带来了单位面积上玉米、红苕播种面积减少,不利于发挥大春生产优势,限制了全年粮食特别是玉米产量的进一步增长。近几年来,在生产实践中不少农户为
Since the mid-1960s, the reform of dry land farming has undergone a process of continuous development from wheat, jade and ramie to intercropping and from narrow-row intercropping to mid-carnage planting. In the 1980s, a system of zonal rotation in the middle of the carriage has been gradually established, such as “double three-foot”, “double 28” and “35” and “25” This has achieved remarkable results in coordinating the contradictions between the three crops of wheat, jade and chinensis, improving the utilization rate of land, light and temperature resources, promoting the virtuous circle of farmland ecology, and increasing output and increasing income. However, this kind of planting in medium-sized boxes brought about a corresponding reduction in unit area of maize and red sown area, which was not conducive to giving full play to the advantages of spring production and limiting the further growth of grain output, especially that of corn. In recent years, many farmers in production practice