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无产阶级文化大革命以来,北京郊区水稻种植面积扩大3倍多,对增产粮食起到了积极的作用。但是,水稻生产需要大量的灌溉水。1970—1972年连续三年大旱,对水稻供水发生很大的困难。如何找出一种新的水稻栽培方式,使它既能适应春旱夏涝的气候特点又能节省用水,在干旱年份和水源不足的情况下,保证相对稳定的种稻面积,就成为迫切需要解决的研究课
Since the Great Proletarian Cultural Revolution, the rice acreage in the suburbs of Beijing has been more than tripled, which has played a positive role in boosting grain output. However, rice production requires large amounts of irrigation water. The three years of heavy drought in 1970-1972 caused great difficulties in water supply to rice. How to find out a new way of rice cultivation that can not only adapt to the climatic characteristics of spring, drought and flood but also save water, and ensure a relatively stable area of paddy rice in the dry years and the shortage of water, it becomes an urgent need Solved research class