Improving wheat grain yield via promotion of water and nitrogen utilization in arid areas.

ABSTRACT: Crop yield is limited by water and nitrogen (N) availability. However, in Hexi Corridor of northwestern China, water scarcity and excessive fertilizer N in wheat (Triticum aestivum L.) production causes serious conflicts between water and N supply and crop demand. A field experiment was conducted from 2016 to 2018 to evaluate whether reducing of irrigation and fertilizer N will reduce grain yield of wheat. There were two irrigation quotas (192 and 240 mm) and three fertilizer N rates (135, 180, and 225 kg N ha^-1). The results showed that reducing irrigation to 192 mm and N rate to 180 kg N ha^-1 reduced water uptake, water uptake efficiency, and N uptake of spring wheat as compared to local practice (i.e., 240 mm irrigation and 225 kg N ha^-1 fertilizer). Whe

SUBMITTER: Tan Y 

PROVIDER: S-EPMC8257629 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature