稻茬过晚播小麦高产密度和氮肥调控效应分析

张明伟, 丁锦峰, 朱新开, 郭文善

Analysis of High-Yielding Planting Density and Nitrogen Application in Super-Late Sowing Wheat Following Rice

Zhang Mingwei, Ding Jinfeng, Zhu Xinkai, Guo Wenshan

表3 过晚播小麦不同密度和氮肥处理对氮肥利用效率的影响（2015-2016）

Table 3 Effects of density and nitrogen fertilizer on nitrogen use efficiency of super-late sowing wheat (2015-2016)

密度 Density (×104/hm2) 施氮量 N amount (kg/hm2) 氮肥运筹 N ratio 氮肥偏生产力 NFPP (kg/kg) 氮素农学效率 NAE (kg/kg) 氮素生理效率 NPE (kg/kg) 氮素表观利用率 NAR (%) 270 180 4:2:1:3 30.82bc 8.73ghij 21.99ghij 39.70jkl 5:1:2:2 32.16b 10.07defg 22.32gh 45.10fg 6:0:2:2 32.21b 10.12defg 21.07ij 48.02e 225 4:2:1:3 25.75ef 8.07hij 21.28hij 37.95l 5:1:2:2 26.87e 9.19fghi 21.61ghij 42.53ghij 6:0:2:2 26.27ef 8.59ghij 20.80jk 41.31hijk 270 4:2:1:3 22.18g 7.45j 19.76kl 37.73l 5:1:2:2 22.49g 7.76ij 18.95l 40.95ijk 6:0:2:2 22.88g 8.15hij 19.66kl 41.47hijk 330 180 4:2:1:3 34.18a 11.51abcd 24.22de 47.53ef 5:1:2:2 35.30a 12.62a 23.58ef 53.54ab 6:0:2:2 35.16a 12.48ab 23.79ef 52.49bc 225 4:2:1:3 29.13d 10.99bcde 25.63bc 42.88ghi 5:1:2:2 30.24cd 12.10abc 24.61cde 49.16de 6:0:2:2 29.90cd 11.77abc 24.61cde 47.81ef 270 4:2:1:3 25.12f 10.01defg 26.27b 38.10l 5:1:2:2 25.75ef 10.64cdef 25.21bcd 42.20hij 6:0:2:2 26.27ef 11.16abcd 27.79a 40.15ijkl 390 180 4:2:1:3 34.99a 11.13abcd 22.24ghi 50.02cde 5:1:2:2 35.44a 11.58abcd 21.83ghij 53.03ab 6:0:2:2 34.72a 10.86cde 19.44l 55.84a 225 4:2:1:3 29.08d 9.99defg 22.72fg 43.96gh 5:1:2:2 29.13d 10.03defg 19.69kl 50.96bcd 6:0:2:2 30.06cd 10.97bcde 21.24hij 51.63bcd 270 4:2:1:3 24.83f 8.92ghij 22.74fg 39.21kl 5:1:2:2 25.07f 9.16fghi 21.39hij 42.85ghi 6:0:2:2 25.32ef 9.41efgh 21.43hij 43.91gh F 密度Density 55.06** 16.58** 41.658** 64.51** 施氮量N amount 5.45** 7.04** 12.669** 22.03** 氮肥运筹N ratio 3.14ns 0.90ns 3.34* 4.25* 密度×施氮量Density×N amount 0.75ns 1.06ns 3.44* 3.15* 密度×氮肥运筹Density×N ratio 0.22ns 0.45ns 2.21* 0.95ns 施氮量×氮肥运筹N amount×N ratio 0.23ns 0.67ns 1.20ns 0.35ns 密度×施氮量×氮肥运筹Density×N amount×N ratio 0.11ns 0.41ns 1.15ns 0.26ns