一、软管输水灌溉的应用与发展沧州地区位于华北平原的东部,黑龙港河下游,属大陆性半干旱季风气候区。多年平均降雨量为596.5毫米,80%的降雨量集中在7、8月份,一般年份约有10个月干旱少雨,3～6月的降雨量一般小于60～70毫米,仅为同期蒸发量的1/10。作物生长期的降雨很不均衡, First, the application of hose irrigation and development Cangzhou is located in the eastern part of the North China Plain, the lower reaches of Heilonggang River, a continental semi-arid monsoon climate zone. The average annual rainfall of 596.5 mm, 80% of the rainfall concentrated in July and August, the general year about 10 months of drought, rainfall in June and June is generally less than 60 to 70 mm, only the same period of evaporation 1/10. Rainfall is uneven during crop growth,