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在美国，农业技术的发展是和农场装备机械化的改善以及交通道路的发展直接联系的，正象人工建筑系统的发展一样，以前它的发展紧密依赖于自然，而没有考虑对水文的影响。浸水的土地和被淹的农作物都需要我们想办法改善。被森林覆盖的平坦而肥沃的洼地，被认为是低产地而需要整
In the United States, the development of agricultural technology is directly linked to the improvement of mechanization of farm equipment and the development of transport roads. Just as the development of artificial building systems, its development has been closely dependent on nature without considering the hydrological effects. Waterlogged land and flooded crops all need us to find ways to improve. The flat and fertile depression covered by forests is considered as a low-yielding area and needs to be rectified