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6 不同熟期夏玉米品种雌穗小花和穗粒数

Table 6 Floret and the kernel number per panicle formation of summer maize hybrids differing in maturities

年份 Year 品种 Hybrid 播期 Sowing date (M-D) 总小花数Number of total floret 受精小花数Number of fertilization floret 穗粒数Number of normal kernel 小花受精率Floret fertility rate (%) 小花结实率Flower seed setting rate (%) 籽粒败育率Seed abortive rate (%) 总结实率Total seed setting rate (%) 总败育率Total abortive rate (%) 2018 JNK728 06-05 664b 544a 422a 81.97b 77.53a 22.47b 63.55a 36.45b 06-15 680a 559a 427a 82.25b 76.35a 23.65b 62.79a 37.21b 06-25 616c 534a 369b 86.69a 69.10b 30.90a 59.90b 40.10a DH618 06-05 600a 497b 399b 82.88b 80.23b 19.77b 66.50c 33.50a 06-15 604a 544a 423a 90.12a 77.71c 22.29a 70.03b 29.97b 06-25 444b 331c 322c 74.62c 97.19a 2.81c 72.52a 27.48c ZD958 06-05 696a 588a 478a 84.44a 81.33b 18.67b 68.68b 31.32b 06-15 650b 563a 495a 86.57a 87.97a 12.03c 76.15a 23.85c 06-25 700a 595a 421b 84.96a 70.79c 29.21a 60.14c 39.86a DH605 06-05 1028a 925a 535a 90.01a 57.82a 42.18b 52.04a 47.96b 06-15 1000a 893a 487b 89.27a 54.55b 45.45a 48.70b 51.30a 06-25 796b 667b 387c 83.79b 58.02a 41.98b 48.62b 51.38a 2019 JNK728 06-05 576c 533a 438a 92.53a 82.18a 17.82b 76.04a 23.96c 06-15 652a 532a 406b 81.60b 76.32b 23.68a 62.27b 37.73b 06-25 616b 468b 375c 75.97c 80.13a 19.87b 60.88c 39.12a DH618 06-05 572a 496a 480a 86.71a 96.77a 3.23b 83.92a 16.08b 06-15 586a 501a 461b 85.49a 92.02b 7.98a 78.67b 21.33a 06-25 574a 478b 445c 83.28b 93.10b 4.91b 77.53b 22.47a ZD958 06-05 654a 622a 501a 95.11a 80.55a 19.45c 76.61a 23.39c 06-15 672a 637a 473b 94.79a 74.25b 25.75b 70.39b 29.61b 06-25 650a 566b 385c 87.08b 68.02c 31.98a 59.23c 40.77a XY335 06-05 695b 560b 508a 80.58a 90.71a 9.29c 73.09a 26.91c 06-15 756a 609a 492a 80.56a 80.79b 19.21b 65.08b 34.92b 06-25 688b 505c 366b 73.40b 72.48c 27.52a 53.20c 46.80a