播期温度对新疆膜下滴灌棉花出苗率及苗期生长的影响
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随龙龙,田景山,姚贺盛,张鹏鹏,梁福斌,王进,张旺锋
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Effects of Different Sowing Dates on Emergence Rates and Seedling Growth of Cotton Under Mulched Drip Irrigation in Xinjiang
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LongLong SUI,JingShan TIAN,HeSheng YAO,PengPeng ZHANG,FuBin LIANG,Jin WANG,WangFeng ZHANG
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表7 不同播期下棉花产量与产量构成因子的变化
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Table 7 Changes of different sowing date on yield and yield components in cotton
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年份
Year | 播前3 d膜下5 cm土壤平均温度
Soil mean temperature averaged over three days before sowing date under 5 cm for mulching film (℃) | 播期
Sowing date
（M-D) | 收获株数
Plant No.
（×104·hm-2） | 单株铃数
Boll number
per plant | 单铃重
Boll weight
(g) | 总铃数
Total boll number
（×104·hm-2） | 籽棉产量
Seed cotton yield
（kg·hm-2） | | 2016 | 17.6 | 4-08 | 15.69±0.20b | 6.70±0.58a | 5.41±0.11a | 105.12±0.21a | 5978.51±139.9a | | 18.4 | 4-16 | 15.79±0.50a | 6.26±0.67b | 5.32±0.14a | 98.85±0.13b | 5197.85±171.1b | | 22.2 | 4-22 | 15.75±0.90a | 6.01±0..50c | 4.94±0.22c | 94.66±0.15c | 4426.26±149.4c | | 2017 | 9.5 | 4-08 | 15.65±0.28c | 7.00±0.44a | 5.37±0.17a | 109.55.±0.21a | 6444.65±205.2a | | 12.0 | 4-12 | 15.72±0.15b | 6.83±0.26a | 5.21±0.11a | 107.36±0.35a | 6005.98±159.5b | | 18.7 | 4-21 | 15.87±0.46a | 6.30±0.49b | 5.08±0.13b | 99.98±0.46b | 5078.07±141.1c | | 24.7 | 4-29 | 15.84±0.34a | 5.90±0.24c | 4.96±0.13b | 93.46±0.29c | 4332.08±126.8d |
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