| 农作物综合抗旱性评价方法的研究 |
| 投稿时间：1997-12-12 修订日期：1998-03-24 点此下载全文 |
| 引用本文：兰巨生.农作物综合抗旱性评价方法的研究[J].西北农业学报,1998,7(3):85~87 |
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| 摘要点击次数: 75 |
| 全文下载次数: 93 |
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| 中文摘要:从统计模型和应用两方面对抗旱系数、干旱伤害指数、干旱敏感指数及优势值等作了比较研究.结果表明:①干旱伤害指数和敏感指数较之抗旱系数只加了一个常数或除以一个常数,由3个公式计算出的3个变量系列其相关系数皆为1,抗旱系数是一个典型的表达式;②Lin的优势值将基因型值和基因型与环境的互作结合在一起,在理论上是比较完备的,但在本试验中计算结果与实际排序不甚符合;③抗旱指数将旱地产量与抗旱系数结合在一起,几年来抗旱指数DI已得到北方一些院校的采纳. |
| 中文关键词:小麦 抗旱性 选择指数 |
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| Comparison of Evaluating Methods for Agronomic Drought Resistance in Crops |
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| Abstract:Five evaluating methods of agronomic drought resitance in wheat were investigated to examine the effect of the evaluation.The results indicateth at drought sus cep tibility(S)and relative yield decrease index in crease a constant as compared with droughtres istance coefficient.(S),(1-Yd/Yp),(Yd/YP)are correlative completely.The superiority meas ure(P)may beregarded as the MS of the joint effect of G and GE.but its suitability for evaluating droughtresistance needs further experiment.Drough tresistance index DI= Yd/YP×Yd/Ymd were accepted by agronomic researchers of several provinces. |
| keywords:Wheat Drought resistance Selecting index |
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