冬小麦测产系数研究
为了提高小麦研究和生产过程中理论测产的准确度,2005—2008、2009—2010年以5个冬小麦主产区为研究对象,探讨了小麦测产系数试点间、品种间差异及与实际产量、产量构成因素的关系。结果表明:小麦测产系数5个生态区4年的平均值为0.90,比实际应用的测产系数(0.85)高5.88%,其中不同生态区间差异达0.05显著水平,不同年份间差异较小;各生态区测产系数试点间差异达0.01显著水平,北方麦区和黄淮北部的品种间差异不显著,其它生态区品种间差异显著。各生态区小麦实际产量与测产系数间呈正相关关系且多数达0.01显著水平;成穗数、穗粒数和千粒重与测产系数呈负相关关系,且多数生态区达0.05或0...
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Published in | 西南农业学报 Vol. 26; no. 2; pp. 475 - 480 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
河南省农业科学院小麦研究所/河南省小麦生物学重点实验室/小麦国家工程实验室/农业部黄淮中部小麦生物学与遗传育种重点实验室,河南郑州,450002
2013
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Subjects | |
Online Access | Get full text |
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Summary: | 为了提高小麦研究和生产过程中理论测产的准确度,2005—2008、2009—2010年以5个冬小麦主产区为研究对象,探讨了小麦测产系数试点间、品种间差异及与实际产量、产量构成因素的关系。结果表明:小麦测产系数5个生态区4年的平均值为0.90,比实际应用的测产系数(0.85)高5.88%,其中不同生态区间差异达0.05显著水平,不同年份间差异较小;各生态区测产系数试点间差异达0.01显著水平,北方麦区和黄淮北部的品种间差异不显著,其它生态区品种间差异显著。各生态区小麦实际产量与测产系数间呈正相关关系且多数达0.01显著水平;成穗数、穗粒数和千粒重与测产系数呈负相关关系,且多数生态区达0.05或0.01显著水平。因此,在理论测产时可以根据已调查的成穗数和穗粒数、考察产量水平和品种特性,结合相应的回归方程校正测产系数或选用0.90。 |
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Bibliography: | HE Sheng-lian, WU Zheng-qing, FANG Bao-ting, YANG Hui-min, LUO Peng,YANG Pan, LI Wei, LEI Zhen-sheng (Wheat Institute, Henan Academy of Agricultural Selenee/Henan Key Laboratory of Wheat Biology/ National Engineering Laboratory for Wheat/Key Laboratory of Wheat Biology and Genetic Breeding in Central Huang-huai-hai Region, Ministry of Agriculture, Henan Zhengzbou 450002, China) Theoretic estimated yield was important process of winter wheat ( Triticum aestivum) or other crops study and production and its ac-curacy had much effect on experiment result. In order to improve the accuracy of theoretic estimated yield in winter wheat study and produc-tion, the difference of coefficient of estimated yield (CEY) among varieties or sites and the relation between CEY and actual yield or its yield components of winter wheat by the date of five main wheat-producing areas in 2005-2008 and 2009-2010 was discussed. The results indi-cated that the mean of CEY of winter wheat was 0.90 in five eco-regions four years and it was |
ISSN: | 1001-4829 |