Ying Yong Sheng Tai Xue Bao 2020 Aug;31(8):2583-2592
National Engineering Research Center for Wheat, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China.
To provide basis for high-yield and high-efficiency of wheat production, with two wheat cultivars, 'Zhengmai 366' (strong gluten) and 'Bainong 207' (medium gluten), we investigated the effects of four nitrogen source types, ammonium chloride (NT), calcium nitrate (NT), urea (NT) and calcium ammonium nitrate (NT), applied under two water treatments, no irrigation (W) and irrigation at jointing and heading stages (W), on soil N-supplying capacity, grain yield and nitrogen utilization efficiency. The results showed that content of soil ammonium and nitrate at flowering stage decreased with increasing soil depths. Compared with the corresponding value of 'Zhengmai 366' under W treatment, W treatment decreased the contents of soil ammonium and nitrate in the 0-60 cm layer, and enzymes activities of urease, invertase and catalase by 10. Read More