The results from his long - term experiment could lead to the economic optimum of the fertilizer use for general recommendation to farmers ( table 8 . ) 从他的长期定位试验，还可推出可广泛向农民推荐的最佳经济施肥量（表8 ） 。
2.
The ability to reduce application rates through use of crn enables producers to avoid the uneconomical practice of applying fertilizer in excess of soil and crop requirements as insurance against potentially large n losses 通过用控释氮肥可以减少施用量，使生产者避免使用超过土壤和作物需要过多的不经济施肥，避免氮素大量损失。
