| 不同土壤水分能量及气象因子对水稻腾发量的影响 |
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| 引用本文： | 陈伟,迟道才,张旭东,邰恩博,陈涛涛,张特男,吴秀明. 不同土壤水分能量及气象因子对水稻腾发量的影响[J]. 沈阳农业大学学报, 2011, 42(4): 465-469 |
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| 作者姓名： | 陈伟 迟道才 张旭东 邰恩博 陈涛涛 张特男 吴秀明 |
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| 作者单位： | 1. 沈阳农业大学水利学院,沈阳,110161
2. 辽宁省水利水电科学研究院,沈阳,110003 |
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| 基金项目： | 辽宁省教育厅重点实验室项目(2009S091); 辽宁省自然科学基金项目(20082122); 辽宁省重大项目(2008NY01); 辽宁省科技厅农业攻关重大项目(2008212003) |
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| 摘 要： | 采用盆栽试验,探讨了不同土壤水分能量和气象因子对水稻腾发量的影响。在水稻的不同生育阶段进行不同程度的土壤水分能量调控,分析受控生育阶段水稻腾发量的变化及其对产量的影响,及受控生育阶段内腾发量的典型日变化规律;利用典型日内充分供水条件下的腾发量数据及相应时段的气象资料,通过逐步回归建立了多元线性回归模型。结果表明:不同生育阶段土壤水分能量调控,对水稻腾发量影响趋势相同,但对产量影响趋势不同;晴天时各处理腾发量强度曲线呈明显的单峰变化,阴天时则无明显规律;诸气象因子中总辐射强度、相对湿度和风速进入了逐步回归模型。在气象因子相同的情况下,腾发量的大小由各处理的土壤水分能量大小决定;相同土壤水分能量下,在水稻腾发量中起主要作用的气象因子是辐射强度、相对湿度和风速。
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| 关 键 词： | 土壤水分能量 气象因子 水稻腾发量 日变化 逐步回归 |
Effect of Different Soil Water Potentials and Meteorological Factors on Evapotranspiration of Rice |
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| CHEN Wei,CHI Dao-cai,ZHANG Xu-dong,TAI En-bo,CHEN Tao-tao,ZHANG Te-nan,WU Xiu-ming. Effect of Different Soil Water Potentials and Meteorological Factors on Evapotranspiration of Rice[J]. Journal of Shenyang Aricultural University, 2011, 42(4): 465-469 |
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| Authors: | CHEN Wei CHI Dao-cai ZHANG Xu-dong TAI En-bo CHEN Tao-tao ZHANG Te-nan WU Xiu-ming |
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| Affiliation: | CHEN Wei1,CHI Dao-cai1,ZHANG Xu-dong1,TAI En-bo2,CHEN Tao-tao1,ZHANG Te-nan1,WU Xiu-ming1 (1.College of Water Conservancy,Shenyang Agricultural University,Shenyang 110161,China,2.Water Conservancy and Hydropower Science Research Institute of Liaoning Province,Shenyang 110003,China) |
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| Abstract: | Pot experiments were conducted to determine the influence of rice evapotranspiration caused by different status of soil water potential and meteorological factors.The variation of rice evapotranspiration and the effects on yield were researched in soil water potential controlling stage.The diurnal variation law of rice evapotranspiration in a typical day in controlling stage also was measured.Multivariate linear models were established by stepwise regression based on the meteorological datum and the data of... |
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| Keywords: | soil water potential meteorological factors rice evapotranspiration rate diurnal variation law stepwise regression |
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