论文部分内容阅读
夏玉米植株高大,生长时期在夏、秋季,这时气温高、蒸发大,所以夏玉米全生长期尤其是拔节到乳熟期需水量和每日耗水量都较其他旱作物来得大,所以灌溉的好坏对玉米的生长和产量具有决定性的作用。沟灌是灌溉玉米的一种好方法,沟灌比畦灌省水一半左右,而且保墒时间较长,由于沟灌是从沟的两侧浸润作物根部土壤的,所以不致破坏土壤结构,地表保持疏松,土
Summer corn plants tall, growing during the summer and autumn, when the temperature is high, evaporation, so the summer corn growth period, especially from jointing to milking stage of water demand and daily water consumption than other dry crops come a big, so The quality of irrigation has a decisive effect on the growth and yield of corn. Furrow irrigation is a good way to irrigate corn. The furrow irrigation is about half of that of shrub irrigation, and the moisture holding time is longer. Because furrow irrigation infiltrates the root soil of the crops from both sides of the furrow, soil structure will not be destroyed and the surface will remain loose.