拔节前补灌追氮对小麦叶片干物质积累量和产量的影响

赵永满, 李瑞奇, 王红光

Effects of Supplemental Irrigation and Nitrogen Topdressing before Jointing on Leaf Dry Matter Accumulation and Yield of Wheat

Zhao Yongman, Li Ruiqi, Wang Hongguang

表2 不同追氮时期和灌水量处理的冬小麦籽粒产量及其构成因素

Table 2 Grain yield and its components of winter wheat under different nitrogen topdressing periods and irrigation amounts

处理 Treatment 穗数 Spike number (×104/hm2) 穗粒数 Grain number per spike 千粒重 1000-grain weight (g) 籽粒产量 Grain yield (kg/hm2) M1T2 651.70b 32.33a 41.59a 8764.23ab M1T3 783.37a 32.27a 41.57a 9352.12a M1T4 691.70ab 32.73a 41.10a 9305.37a CK 651.70b 33.13a 39.76a 8584.45b M2T2 666.70b 31.73a 43.07a 9111.57bc M2T3 835.04a 31.83a 42.54a 10 064.66a M2T4 701.70b 31.37a 41.79a 9197.40b CK 651.70b 33.13a 39.76b 8584.45c M3T2 715.04bc 30.93a 43.35a 9588.60b M3T3 886.71a 32.63a 42.84a 11 033.30a M3T4 778.37ab 32.47a 42.35a 10 703.36a CK 651.70c 33.13a 39.76b 8584.45c T 70.250*** 0.016 1.234 19.250*** M 49.490*** 0.085 14.452*** 62.510*** T×M 8.420*** 0.018 0.212 4.540**