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当前位置: 首页 > 文章 > 深松耕条件下调亏灌溉对冬小麦生长及产量的影响 节水灌溉 2018 (7)
Position: Home > Articles > 深松耕条件下调亏灌溉对冬小麦生长及产量的影响 Water Saving Irrigation 2018 (7)

深松耕条件下调亏灌溉对冬小麦生长及产量的影响

作  者：
张玉顺;路振广;邱新强;秦海霞;和刚;张明智;孙彬
关键词：
冬小麦;灌水下限;深松耕;产量;水分利用效率
摘  要：
为探明深松耕条件下调亏灌溉对冬小麦生长及产量的影响,采用完全随机试验设计,分别对不同水分调亏水平与深松耕深度下冬小麦的株高、叶面积等指标进行对比分析.结果表明:冬小麦株高与地上干物质质量随生育期的推进呈增加趋势,叶面积指数呈先增加后减小趋势.灌水下限在田间持水率的40%~70%范围内,随深松耕深度的增加,冬小麦株高、叶面积指数、地上干物质质量、穗长、穗粒数、千粒重、耗水量与产量均呈显著性增加趋势,灌溉水分利用效率呈显著性减小趋势(P<0.05).在深松耕土壤20~60 cm范围内,随灌水下限的增加,冬小麦株高、叶面积指数、地上干物质质量、穗长、茎粗、穗粒数、千粒重、耗水量与产量均呈显著性增加趋势,灌溉水分利用效率呈显著性减小趋势(P<0.05).从产量、水分利用效率与播前深松耕工程难易程度综合考虑,灌水下限为田间持水率的55%与播前深松耕40 cm组合处理可不显著性降低冬小麦产量,同时提高作物水分利用效率以灌溉水分利用效率,从而使冬小麦各项生理指标达最佳.该研究为深松耕条件下调亏灌溉技术的应用、冬小麦高产高效节水以及河南省水资源优化配置提供理论依据.
作  者：
ZHNAG Yu-shun;LU Zheng-guang;QIU Xin-qiang;QIN Hai-xia;HE Gang;ZHNAH Ming-zhi;SUN Bin;Henan Institute of Water Resources and Hydropower Research;Henan Water Saving Irrigation Engineering Technology Research Center;Henan Irrigation Experiment Center Station;Xuchang Irrigation Experiment Station;
单  位：
ZHNAG Yu-shun%LU Zheng-guang%QIU Xin-qiang%QIN Hai-xia%HE Gang%ZHNAH Ming-zhi%SUN Bin%Henan Institute of Water Resources and Hydropower Research%Henan Water Saving Irrigation Engineering Technology Research Center%Henan Irrigation Experiment Center Station%Xuchang Irrigation Experiment Station
关键词：
winter wheat;;lower limit of irrigation amount;;subsoiling;;yield;;water use efficiency
摘  要：
In order to explore the influence of regulated deficit irrigation with subsoiling on crop growth and yield,using winter wheat as the research object,the completely random experiment designed is used to research the different effects of regulated deficit irrigation and subsoiling on the growth indexes of winter wheat,including height and leaf area. The results show that plant height and dry matter mass on the ground increase along with the advance of growth period,while the leaf area increases firstly and then decreases; under the condition that lower limit of irrigation amount is 40% ~ 70% of field capacity,with the increase of subsoiling depth,many growth indexes,including the plant height,leaf area index,dry matter mass on the ground,spike length,stem diameter,spike grain number,mass of 1 000-grains,water consumption and yield,show a trend of increasing significantly,while the irrigation water use efficiency significantly decreases; in the subsoiling of 20 ~ 60 cm range,with the increase of lower limit of irrigation amount,the growth indexes,including the winter wheat plant height,leaf area index,dry matter mass on the ground,spike length,mass of 1000-grains,water consumption and yield,show a trend of increasing significantly,while the irrigation water use efficiency significantly decrease. Comprehensively considering from production,water use efficiency and the difficulty of pre-sowing subsoiling,the combination of lower limit irrigation amount of 60% of the filed capacity and 40 cm pre-sowing subsoiling can insignificantly reduce winter wheat yield,while improve irrigation water use efficiency to get the best physiological indexes of winter wheat. This study provides a theoretical basis for the application of deficit irrigation technology under subsoiling condition,the high yield,high efficiency and water saving of winter wheat,and the optimal allocation of water resources in Henan province.

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