Prospects for Achieving Higher Nutrient Use Efficiency as Yields Increase in Cereal Production Systems
Introduction As we look to the future, people in nations around the world share the same concerns about increasing cereal production (because it is, and will continue to be, the essential food staple of an expanding population) while also reducing nutrient losses to the environment.Despite considerable evidence to the contrary, critics abound in inferring that higher cereal yields are only achieved by ever higher nutrient application rates per unit area, and ever higher risks of nutrient contamination of our water and air resources.Such critics may be well-intentioned in their environmental concerns, but they also need to hear ”the rest of the story” from both plant scientists and soil scientists.That reassuring ”story” from agronomic scientists, although still unfolding as new research is published, is that higher nutrient use efficiency has already been achieved within the context of cereal yield increases over the past 30 years or more.Furthermore, the future prospects for simultaneous gains in both nutrient efficiency and cereal crop yields are also strong as long as the appropriate technology investments continue.The pertinent technology advances that are essential to achieve the latter goal are outlined in this synopsis.
Tony J.Vyn
Agronomy Department,Purdue University
国内会议
北京
英文
3-6
2016-03-16（万方平台首次上网日期，不代表论文的发表时间）