基于品种生育期有效积温确定夏玉米适宜播期
陈静,任佰朝,赵斌,刘鹏,杨今胜,张吉旺

Determination on Suitable Sowing Date of Summer Maize Hybrids Based on Effective Accumulated Temperature in Growth Period
CHEN Jing,REN BaiZhao,ZHAO Bin,LIU Peng,YANG JinSheng,ZHANG JiWang
表2 播期对不同熟期夏玉米产量及其构成因素的影响
Table 2 Effects of sowing date on yield and yield components of summer maize hybrids differing in maturities
年份
Year
品种
Hybrid
播期
Sowing date (M-D)
产量
Yield (kg·hm-2)
千粒重
1000-kernel weight (g)
穗粒数
Kernels per ear
穗数
Harvest ear number (ears/hm2)
2017 DH518 06-05 10794a 356a 471ab 64375ab
06-15 11033a 347a 483a 65833a
06-25 9754b 332b 467b 62917b
ZD958 06-05 13043a 370a 553a 63750b
06-15 12757b 367b 515b 67500a
06-25 9831c 339c 446c 65025b
2018 JNK728 06-05 9154ab 337b 422a 64365b
06-15 9717a 340b 427a 66930a
06-25 8780b 365a 369b 65190ab
DH618 06-05 8941a 347b 399b 64575a
06-15 10455a 375a 423a 65910a
06-25 7538b 375a 322c 62430b
ZD958 06-05 9583b 297b 478b 67500a
06-15 11208a 338a 495a 66990ab
06-25 9390b 343a 421c 65025b
DH605 06-05 12158a 342c 535a 66450a
06-15 11341b 356b 487b 65415a
06-25 9687c 386a 387c 64845a
2019 JNK728 06-05 9037b 335c 438a 61590a
06-15 9694a 382b 406b 62505a
06-25 7857c 393a 375c 53310b
DH618 06-05 10399b 354c 480a 61200a
06-15 11289a 406a 461b 60315a
06-25 9954c 394b 445c 56775b
ZD958 06-05 10846a 342b 501a 63300a
06-15 9698b 345b 473b 59430b
06-25 9166c 395a 385c 60270b
XY335 06-05 11389a 365b 508a 61425a
06-15 9675b 334c 492a 58875b
06-25 7962c 405a 366b 53715c
ANOVA 年份 Year(Y) ns ns ns **
品种Hybrid(H) * * ** ns
播期Sowing date(S) ** ** ** *
品种×播期H×S * ** ** ns