| 地温与玉米品种出苗关系的研究 |
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| 引用本文： | 李青松,高立起,石爱丽,邢占民,梁秋华,季志强.地温与玉米品种出苗关系的研究[J].作物杂志,2011(4):89-92. |
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| 作者姓名： | 李青松 高立起 石爱丽 邢占民 梁秋华 季志强 |
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| 作者单位： | 承德市农业科学研究所,067000,河北承德 |
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| 摘 要： | 利用5个春玉米品种自然条件下分期播种出苗情况以及地温气象资料,对地温与玉米出苗的关系进行了研究和分析。结果表明:出苗率随着播种后的时间推移呈逻辑斯蒂曲线,土温与出苗时间呈指数曲线变化,土壤平均温度与地积温呈二次曲线T=816.61-57.26t+1.17t2,根据方程得出了玉米出苗最适宜温度是24.37℃。并利用积温模型得出5个品种的发育起点温度是5.12~8.40℃,不同品种其发育起点温度不同。
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| 关 键 词： | 玉米品种 平均地温 地积温 出苗 起点温度 |
Relationships between Soil Temperature and Emergence of Maize |
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| Li Qingsong,Gao Liqi,Shi Aili,Xing Zhanmin,Liang Qiuhua,Ji Zhiqiang.Relationships between Soil Temperature and Emergence of Maize[J].Crops,2011(4):89-92. |
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| Authors: | Li Qingsong Gao Liqi Shi Aili Xing Zhanmin Liang Qiuhua Ji Zhiqiang |
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| Institution: | Li Qingsong,Gao Liqi,Shi Aili,Xing Zhanmin,Liang Qiuhua,Ji Zhiqiang(Chengde Institute of Agriculture,Chengde 067000,Hebei,China) |
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| Abstract: | Relationships between soil temperature and emergence of maize was analyzed based on the meteorological data of soil temperature and the emergence of of five spring maize varieties by interval sowing under the field conditions.The results indicated a logistic curve relationship between the emergence rate and emergence time,and the exponential curve between average soil temperature and emergence time.Conic equation,T=816.61-57.26t+1.17t2,between the soil average temperature and soil accumulative temperature w... |
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| Keywords: | Maize variety Soil average temperature Soil accumulative temperature Maize emergence Critical point of temperature |
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