Technological progress for sustaining food‐population balance: achievement and challenges
指出自1990年代初以来水稻土地生产率增长放缓，原因是灌溉生态系统技术达到极限且缺乏适合雨养环境的技术，并探讨了通过提高产量上限、保护已有成果及利用生物技术开发耐逆品种来应对粮食-人口平衡挑战的路径。
Abstract The growth in land productivity in rice cultivation has slowed down substantially since the early 1990s due to technological progress reaching its limit in the irrigated ecosystem and nonavailability of suitable technologies for the unfavorable rainfed environments. This development raises concern regarding the world's ability to meet the food‐population balance in the coming decades. Rice research must deal with a number of difficult problems to meet the challenge: raising the yield ceilings of the current available rice varieties; protecting the past yield gains in the irrigated ecosystem; and using biotechnology tools to develop high yielding varieties for the rainfed systems that are tolerant to drought, submergence, and problem soils. The speed and extent of meeting these challenges depends on the level of resources that can be mobilized to support crop improvement research in the public sector.