【摘要】 在不同播前土壤储水条件下,应用抗旱指数法、隶属函数法、模糊综合评判法研究了14个不同生态类型旱地冬小麦品种的抗旱性。结果表明,随着播前土壤储水的增加,旱地冬小麦产量和水分利用效率显著提高,相同土壤储水条件下品种之间产量与水分利用效率差异显著,不同生态型冬小麦对播前土壤储水的反应明显不同。抗旱指数法、隶属函数法、模糊综合评判法均能较好地评价旱地冬小麦的抗旱性,其评价结果基本一致。不同地区参试品种抗旱性表现为:甘肃陇东>山西地区>北京地区>渭北旱塬>黄淮地区。更多还原

【Abstract】 Under different soil-stored water levels,the drought-resistance of 14 dryland winter wheat varieties of different ecological types was researched by means of drought-resistance index,subordinate function values and fuzzy synthetic determination. It is shown that the yield and WUE of dryland winter wheat are improved significantly along with the increasing of soil-stored water before sowing.Under the same soil-stored water level,there is a remarkable difference of the yield and WUE among different varieties. And the reaction to soil-sorted water of different ecological types of winter wheat is different. The drought-resistance of dryland winter wheat can be evaluated excellently by the three methods of drought-resistance index, subordinate function values and fuzzy synthetic determination.The results are basically consistent. Drought-resistance of the tested varieties from different regions appears as East Gansu > Shanxi > Beijing >Weibei Highland > Huanghuai Plain.更多还原