Abstract:It is a very important competitive strategy for plants growing in infertile environments to have a higher nutrient use efficiency ( NUE ).The concept of NUE has been described by many parameters. In recent years,some basic conclusions may be obtained:(1) NUE differed within plant species,among different plant species with varied life forms and different organs of an individual plant;(2) NUE was affected by many factors. Many case studies have focused on the influences of nutrient availability...