江淮稻作区氮肥用量对高产优质中籼稻产量、品质及氮肥利用效率的影响

阮新民, 从夕汉, 杜弘杨, 岳伟, 施伏芝, 罗彦长, 王元垒, 罗志祥

Effects of Nitrogen Fertilizer Rates on Grain Yield, Grain Quality, and Nitrogen Use Efficiency of High-Yield and High-Quality Medium Indica Rice in the Jianghuai Rice-Growing Region

Ruan Xinmin, Cong Xihan, Du Hongyang, Yue Wei, Shi Fuzhi, Luo Yanchang, Wang Yuanlei, Luo Zhixiang

表6 品种间氮利用效率差异

Table 6 Difference in nitrogen use efficiency among varieties

品种 Variety NDE (kg/kg) ±CK (%) NGE (kg/kg) ±CK (%) NPE (kg/kg) ±CK (%) NRE (%) ±CK (%) NAE (kg/kg) ±CK (%) NPPE (%) ±CK (%) V1 121.2a 9.01 70.3a 9.10 59.3a 15.57 41.9abc 11.03 24.3b 25.41 43.5a 24.32 V3 100.6d -9.51 54.6c -15.31 40.3d -21.47 30.1d -20.18 12.1d -37.37 30.1e -14.10 V4 104.1bcd -6.32 68.7a 6.62 61.2a 19.30 48.9a 29.61 29.9a 54.31 43.2ab 23.21 V5 112.2b 0.92 70.2a 8.91 58.8a 14.57 39.8bc 5.35 23.4b 20.65 41.5b 18.58 V6 106.3bcd -4.33 64.6ab 0.18 55.0ab 7.32 45.3ab 19.98 25.0b 28.83 39.0c 11.46 V7 103.0cd -7.32 60.0bc -6.89 47.9c -6.65 40.8bc 7.91 19.5c 0.51 35.1d 0.24 V2 (CK) 111.2bc － 64.5ab － 51.3bc － 37.8c － 19.4c － 35.0d － 变异系数CV (%) 7.04 － 9.82 － 15.09 － 15.44 － 26.91 － 13.58 －