聚天门冬氨酸螯合氮肥减量基施对东北春玉米的增效机制

唐会会,许艳丽,王庆燕,马正波,李光彦,董会,董志强

Increasing spring maize yield by basic application of PASP chelating nitrogen fertilizer in northeast China

Hui-Hui TANG,Yan-Li XU,Qing-Yan WANG,Zheng-Bo MA,Guang-Yan LI,Hui DONG,Zhi-Qiang DONG

表2 CN与 PASP-N不同施肥量对玉米产量构成因素的影响

Table 2 Effects of CN and PASP-N treatments on maize yield components

处理 Treatment 穗长 Ear length (cm) 秃尖长 Bare tip length (cm) 穗粗 Ear diameter (mm) 穗粒数 Kernels per ear 千粒重 1000-kernel weight (g) CK 19.3±1.2 bc 1.6±0.7 ab 45.5±1.7 b 588.1±57.4 b 273.0±15.2 ab CN1 19.9±0.9 ab 1.2±0.4 ab 48.0±1.4 a 600.6±39.2 a 277.4±18.1 a CN2 19.2±1.1 c 0.8±0.8 b 49.2±1.4 a 600.0±61.0 a 267.2±11.6 b CN3 19.9±1.1 ab 2.0±1.1 a 49.0±1.5 a 623.7±43.6 a 272.0±6.9 ab PASP-N1 20.0±1.2 a 1.0±0.7 ab 48.9±2.0 a 606.6±45.5 a 276.7±14.0 a PASP-N2 19.8±1.1 abc 1.5±0.7 ab 48.9±1.5 a 615.9±49.8 a 267.8±12.1 b PASP-N3 20.0±1.0 a 1.0±0.7 ab 48.3±1.6 a 604.0±37.2 a 270.7±10.8 ab