推荐氮肥适宜施用量的方法论刍议

On the methodology of recommendation for the application rate of chemical fertilizer nitrogen to crops

摘要: 本文对推荐氮肥施用量的两种技术路线进行了讨论。根据80年代和20032～004年在太湖地区进行的氮肥施用量试验网的水稻和小麦田间试验结果,对区域平均适宜施氮量法的产量效益、经济效益和环境效益进行了初步评价,提出了以区域平均适宜施氮量作为宏观控制的基础,结合田块具体情况进行微调的推荐路线。

Abstract: In the present paper the methodology of recommendation for the application rate of chemical fertilizer nitrogen(N) is discussed.Adaptation of the regional mean optimal application rate of chemical fertilizer N(RMOR) for the recommendation for rice and wheat crops is evaluated from the view point of yield efficiency,net income and environmental impacts based on the network of field experiments conducted in Tai Lake region in 19821985 and 20032004 years,respectively.It is suggested that the RMOR in combination with tuning according to the specific field conditions can be used for the recommendation.