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- W2509121955 abstract "Winter wheat ( Triticum aestivum L.) production in the Huang‐Huai‐Hai plain of China has been threatened by drought. This study was conducted to determine the water and N use of wheat under quantifying irrigation (W1, 60 mm of irrigation each at jointing and anthesis) and supplemental irrigation, determined by measuring the water content in the 0‐ to 20‐cm (W2), 0‐ to 40‐cm (W3), and 0‐ to 60‐cm (W4) soil layers. The highest grain yields of 9177 kg ha −1 in 2012 to 2013 and 9460 kg ha −1 in 2013 to 2014 were obtained in W3, which exhibited greater soil water consumption in the 60‐ to 140‐cm soil layers. Soil nitrate N uptake in the 40‐ to 160‐cm soil layers was higher than in W1, W2, and W4 treatments. Compared with the W1, W2, and W4, the total N uptake in W3 was higher by 9.4, 27.1, and 7.7%, respectively, and the grain N content was higher by 13.3, 33.0, and 11.2%. The water use efficiency, partial factor productivity of applied fertilizer and N harvest index were the highest in W3, which also showed high N utilization efficiency. Quadratic relationships of the amount of irrigation with soil water consumption, grain yield, water use efficiency, total N uptake, N translocation amount, N uptake for grain postanthesis, partial factor productivity of applied fertilizer, and N harvest index were also observed. Optimizing the supplemental irrigation regime improved uptake water and N uptake from the soil and increased the grain yield and water and N use." @default.
- W2509121955 created "2016-09-16" @default.
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- W2509121955 date "2016-10-06" @default.
- W2509121955 modified "2023-10-18" @default.
- W2509121955 title "Water and Nitrogen Use of Winter Wheat under Different Supplemental Irrigation Regimes" @default.
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- W2509121955 doi "https://doi.org/10.2135/cropsci2015.08.0521" @default.
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