节水减氮对夏玉米干物质和氮素积累转运及产量的调控效应

王旭敏,雒文鹤,刘朋召,张琦,王瑞,李军

Regulation Effects of Water Saving and Nitrogen Reduction on Dry Matter and Nitrogen Accumulation, Transportation and Yield of Summer Maize

WANG XuMin,LUO WenHe,LIU PengZhao,ZHANG Qi,WANG Rui,LI Jun

表5 节水减氮处理对2018—2019年玉米产量的影响

Table 5 Effects of water saving and nitrogen reduction on maize yield in 2018-2019

处理 Treatment 2018 2019 穗数 Ear number (No./hm2) 穗粒 Grain number per ear 百粒重 100-kernel weight (g) 产量 Yield (kg·hm-2) 穗数 Ear number (No./hm2) 穗粒 Grain number per ear 百粒重 100-kernel weight (g) 产量 Yield (kg·hm-2) W0 N0 56984b 405bc 26.89b 6161c 57025c 399de 28.21bc 5252c N75 57203b 416b 27.74b 7422b 57833b 409d 29.59b 7871b N150 57714a 460ab 28.24ab 8045a 57826a 448b 30.08b 8482a N225 58143a 485a 31.79a 8107a 58001a 470a 32.61a 8676a N300 58006a 424b 30.79b 8257a 58356a 423c 32.41a 8444a W1 N0 57267c 446c 28.99c 7065c 57205c 426b 29.9c 6865d N75 57894b 499b 32.02b 8652b 58014b 489a 32.35bc 8705c N150 58259a 513a 32.73a 9390ab 58509a 497a 32.72b 9556b N225 58497a 519a 33.41a 9729a 58817a 503a 34.42a 10451a N300 58123a 517a 32.55b 9619a 58443a 495a 32.67b 10508a W2 N0 57195b 466b 30.48c 7323c 57963b 463c 31.37bc 6891c N75 58259a 495ab 32.7ab 8612b 58375a 483b 32.59b 9259b N150 58251a 508b 34.07a 9707a 58201ab 509a 33.7b 9664ab N225 58506a 515a 33.25a 10016a 57956b 520a 34.73a 9982a N300 58212a 520a 32.61b 9802a 58730a 510a 34.18a 9926a F-value W 11.06** 20.58*** 63.92*** 177.82*** 83.12*** 10.12** 1.02NS 33.93*** N 25.61*** 101.89*** 198.10*** 208.64*** 408.96*** 91.48*** 11.87*** 72.48*** W×N 2.88** 4.78** 16.28*** 3.62** 16.78** 3.90** 2.40* 3.54*