化学调控和氮肥对高密度下春玉米光热水利用效率和产量的影响

刘笑鸣,顾万荣,李从锋,张立国,王明泉,龚士琛,陈喜昌,李彩凤,魏湜,李文华

Effects of Chemical Regulation and Nitrogen Fertilizer on Radiation, Heat and Water Utilization Efficiency and Yield of Spring Maize Under Dense Planting Condition

LIU XiaoMing,GU WanRong,LI CongFeng,ZHANG LiGuo,WANG MingQuan,GONG ShiChen,CHEN XiChang,LI CaiFeng,WEI Shi,LI WenHua

表2 高密度下化学调控对籽粒灌浆参数的影响

Table 2 Effects of chemical regulation on the characteristic parameters of grain filling under high density

年份 Year 处理 Treatment 方程参数 Parameter of equation 籽粒灌浆参数 Parameter of grain filling A B C Tmax (d) Vmax (g·100-kernel-1·d-1) Vm (g·100-kernel-1·d-1) P (d) 2017 N100+CK 32.30 47.86 0.1408 27.47 1.1370 0.5374 42.61 N200+CK 33.84 44.48 0.1412 26.88 1.1946 0.5695 42.49 N300+CK 31.12 53.52 0.1469 27.09 1.1429 0.5331 40.84 N100+Y 33.09 41.39 0.1395 26.69 1.1540 0.5549 43.01 N200+Y 36.39 40.18 0.1382 26.72 1.2573 0.6068 43.42 N300+Y 32.89 40.84 0.1393 26.63 1.1454 0.5517 43.07 2018 N100+CK 30.61 60.83 0.1427 28.79 1.0920 0.5019 42.05 N200+CK 34.16 53.91 0.1369 29.13 1.1691 0.5449 43.83 N300+CK 34.50 51.45 0.1335 29.52 1.1514 0.5396 44.94 N100+Y 32.75 54.24 0.1405 28.42 1.1503 0.5358 42.70 N200+Y 37.00 42.72 0.1335 28.12 1.2349 0.5916 44.94 N300+Y 34.64 46.71 0.1367 28.12 1.1838 0.5611 43.89