Responses of soil water consumption of different wheat (Triticum aestivum L.) Varieties to nitrogen application levels

Abstract

Background: SPAD value of flag leaf increased highest N rate was 280 kg ha–1. 200-300 cm at maturity stage, indicating the importance of deep soil water storage for grain filling. Variety YH-20410 increased the soluble sugar content in grains protein, and dry gluten.Aims: This study aimed to evaluate the biochemical impact of nitrogen (N) fertilization on different wheat cultivars. We investigated the influence of topsoil N availability on different varieties, and uptake by wheat (Triticum aestivum L.).Methods: The experiment included two varieties (YH-618, and YH-20410) and three nitrogen levels, (N0, N210, and N280 kg ha–1). The higher nitrogen uptake and soil water consumption, grain protein content, and yield at higher planting densities and will benefit farmers by forming stronger overall crops.Results: Indicated that wheat variety YH-20410 had the higher nitrogen uptake and soil water consumption, grain protein content, and yield at higher planting densities and will benefit farmers by forming stronger overall crops. The results indicated that suitable nitrogen fertilizer could reduce soil water to jointing stage, provide more water use for wheat in later growth stage, and promote better soil water consumption from flowering to maturity stage. It also indicated that soil water storage decreased from 80-200 cm at flowering stage to 200-300 cm at maturity stage, indicating the importance of deep soil water storage for grain filling.Conclusions: Nitrogen application amount 210 kg ha–1 combined to variety YH-20410 increased the soluble sugar content in grains at the filling stage, which was conducive to the accumulation of sucrose, and starch in grains; 210 kg ha–1 was beneficial to increase the content of wheat gluten in grains, obtain higher protein content and yield in grains, and increase the content of dry gluten in grains. The indicated that wheat variety YH-20410 had the higher nitrogen uptake and soil water consumption, grain protein content, and yield at higher planting densities and will benefit farmers by forming.