基于播前土壤储水的旱地冬小麦抗旱性研究

Studies on the drought-resistance of dryland winter wheat based on soil-stored water before sowing

  • 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。

     

    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.

     

/

返回文章
返回