播种点灌或滤水灌是人为增加土壤含水量以满足种子萌发和幼苗生植、生长和生理用水的需要。在旱田播种前向刨埯或开沟中注入一定量的水,然后下种、投肥、覆土,一次完成播种任务。此方法是北方干旱地区广大群众在生产实践中摸索出来的抗旱保苗措施。随着生产的不断发展,点灌、滤水灌已由人工操作实现了机械化、半机械化。一次即可完成开沟、注水、播种、施肥和覆土。节省了人力且播种、注水、下种、投肥均匀解决了玉米、高粱、谷子、甜菜等作物的春旱播种难题,特别对于北方小麦的大面积播种,抵抗春旱,开拓出了一条切实可行、科学的旱田节水灌溉、种植新路。 Seeding irrigation or drainage irrigation is artificially increased soil moisture to meet the seed germination and seedling planting, growth and physiological water needs. In the field before planting sowing or ditching into a certain amount of water into the ditch, and then under the planted, fertilizing, casing, a complete sowing task. This method is drought-proof and seedling-saving measures explored by the broad masses of people in arid areas of northern China during their production practice. With the continuous development of production, point irrigation, drainage irrigation has been achieved by the manual operation of mechanization, semi-mechanization. Ditching, watering, seeding, fertilizing and casing are done once. Save manpower and solve the spring and drought seeding problems of crops such as corn, sorghum, millet and sugar beet by sowing, watering, planting and fertilizing, especially for large area sowing of northern wheat and resisting drought in the spring, which opens up a practical and feasible Scientific water-saving irrigation of dry fields, planting new roads.