不同熟期玉米不同粒位籽粒灌浆和脱水特性对密度的响应
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朱亚利, 王晨光, 杨梅, 郑学慧, 赵成凤, 张仁和
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Response of grain filling and dehydration characteristics of kernels located in different ear positions in the different maturity maize hybrids to plant density
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ZHU Ya-Li, WANG Chen-Guang, YANG Mei, ZHENG Xue-Hui, ZHAO Cheng-Feng, ZHANG Ren-He
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表3 不同熟期品种玉米的生育进程与有效积温需求情况
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Table 3 Growth process and demand for effective accumulated temperature of different maturity maize hybrids
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年份 Year | 品种 Hybrid | 密度 Density | 播种期 Sowing date (M/D) | 吐丝期 R1 (M/D) | 生理成熟期 R6 (M/D) | 吐丝前天数 Days before silking (d) | 吐丝前 有效积温 EATBS (℃ d) | 吐丝后天数 Days after silking (d) | 吐丝后 有效积温 EATAS (℃ d) | 生育期 Total growth | 总有效积温 TEAT (℃ d) | 2018 | 东单60 Dongdan 60 | D1 | 4/30 | 7/16 | 9/27 | 77 | 713.3 | 73 | 739.9 | 150 | 1453.2 | D2 | 4/30 | 7/16 | 9/26 | 77 | 713.3 | 72 | 734.4 | 149 | 1447.7 | D3 | 4/30 | 7/16 | 9/26 | 77 | 713.3 | 72 | 734.4 | 149 | 1447.7 | D4 | 4/30 | 7/16 | 9/25 | 77 | 713.3 | 71 | 729.4 | 148 | 1442.7 | 先玉335 Xianyu 335 | D1 | 4/30 | 7/15 | 9/22 | 76 | 699.8 | 69 | 721.5 | 145 | 1421.3 | D2 | 4/30 | 7/16 | 9/22 | 77 | 713.3 | 68 | 710.6 | 145 | 1423.9 | D3 | 4/30 | 7/16 | 9/21 | 77 | 713.3 | 67 | 704.8 | 144 | 1418.2 | D4 | 4/30 | 7/16 | 9/20 | 77 | 713.3 | 66 | 699.4 | 143 | 1412.7 | 2019 | 东单60 Dongdan 60 | D1 | 4/29 | 7/15 | 9/25 | 77 | 715.5 | 72 | 740.2 | 149 | 1455.8 | D2 | 4/29 | 7/15 | 9/25 | 77 | 715.5 | 72 | 740.2 | 149 | 1455.8 | D3 | 4/29 | 7/15 | 9/24 | 77 | 715.5 | 71 | 734.1 | 148 | 1449.7 | D4 | 4/29 | 7/15 | 9/23 | 77 | 715.5 | 70 | 728.1 | 147 | 1443.6 | 先玉335 Xianyu 335 | D1 | 4/29 | 7/14 | 9/22 | 76 | 702.0 | 69 | 729.2 | 145 | 1431.3 | D2 | 4/29 | 7/15 | 9/21 | 77 | 715.5 | 68 | 715.7 | 145 | 1431.3 | D3 | 4/29 | 7/15 | 9/20 | 77 | 715.5 | 67 | 710.3 | 144 | 1425.8 | D4 | 4/29 | 7/15 | 9/19 | 77 | 715.5 | 66 | 705.4 | 143 | 1420.9 |
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