银北种稻不是水稻本身的种植技术问题,而是灌溉排水问题。要发展银北种稻,水源主要应依靠井水和沟水,排水要改水平排为垂直与水平排相结合。具体的办法有以下四条:一、尽量减少渠道引水,不增加河源供水,利用沟水和井水种稻目前,唐、汉、惠、西干等大干渠都是满负荷运转。进入银北的引水量,1981年是20.8亿立米,1982年是21.7亿立米,占总引水量的57％,在目前条件下只能满足现有布局作物的灌溉用水,假如增加水稻种植面积,河源供水将严重不足。因此,对于银北扩种水稻和开垦 Silver north of rice is not a rice cultivation technology itself, but the problem of irrigation and drainage. In order to develop Yinbei rice, the water source should mainly depend on well water and gully water, and the draining water should be changed horizontally and vertically to be combined with the horizontal row. The specific measures are the following four: First, try to reduce channel diversion, not to increase Heyuan water supply, use of ditch water and well water rice At present, Tang, Han, Hui, Xi dry and other major channels are running at full capacity. The amount of water diverted into the northern part of Yinbei was 2.08 billion cubic meters in 1981 and 2.17 billion cubic meters in 1982, accounting for 57% of the total water diversion. Under the current conditions, it can only meet the irrigation water requirements of the existing layout crops. If rice planting area is increased, Heyuan water supply will be seriously inadequate. Therefore, for the North Bank expanded rice and reclamation