论文部分内容阅读
一、辽宁省水稻生产的发展及其限制因素辽宁省光温条件优越,水稻生产历史悠久。回顾建国以来。大体经历了五个发展时期。①1949～1956年,恢复发展时期。这期间恢复一些解放前留下来的老灌区,建设一部分新灌区。水稻种植面积和产量同步增长。全省水稻面积由1949年的96.6万亩增加到1956年的437.8万亩,亩产由137.0公斤增加到204.5公斤;②1957～1962年,大波动时期。由于在农业上推行极左路线不顾主客观条件,盲目扩大种植面积,致使产量明显减少,种植面积也大幅度下降。1962年全省水稻面积已从1957年的359.8万亩下降到210.0万亩,亩产由153.0公斤降到139.0公斤;③1963～1977年,逐步回
First, the development of rice production in Liaoning Province and its limiting factors Liaoning Province, light and temperature superior conditions, rice production has a long history. Since the founding of the People’s Republic Generally experienced five development period. ① 1949 ~ 1956, recovery and development period. During this period, some old irrigated areas left over before the liberation will be resumed and some new irrigated areas will be built. Rice acreage and output increased simultaneously. The province’s rice area increased from 966,000 mu in 1949 to 4,378,000 mu in 1956, with an increase from 137.0 kg to 204.5 kg per mu; ② During 1957-1962, during a period of great fluctuation. Since the implementation of the ultraleftist line in agriculture has blindly expanded the planting area regardless of the subjective and objective conditions, the output has been significantly reduced and the acreage under cultivation has also dropped significantly. In 1962, the province’s rice area dropped from 3.598 million mu in 1957 to 2.10 million mu and its output dropped from 153.0 kilograms to 139.0 kilograms. From 1963 to 1977,