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当前位置: 首页 > 文章 > 半干旱区限量补灌对全膜垄播马铃薯产量形成及水分利用效率的影响 甘肃农业大学学报 2019 (5) 100-105
Position: Home > Articles > 半干旱区限量补灌对全膜垄播马铃薯产量形成及水分利用效率的影响 Journal of Gansu Agricultural University 2019 (5) 100-105

半干旱区限量补灌对全膜垄播马铃薯产量形成及水分利用效率的影响

作  者：
杨昕宇;康益晨;张卫娜;石铭福;要凯;齐荣;秦舒浩
单  位：
甘肃农业大学园艺学院
关键词：
旱作马铃薯;限量补灌;全膜垄播;产量形成;水分利用效率
摘  要：
[目的]探究限量补灌对全膜垄播旱作马铃薯田的蒸散量、灌水利用率、产量及产量性状的影响,以期为半干旱雨养农业区马铃薯产业雨水高效利用、进一步实现节水高产提供理论依据.[方法]通过大田试验,研究了限量补灌对全膜垄播马铃薯田蒸散量、灌水利用率(IWUE)、产量及产量性状的影响.[结果]在全膜垄播条件下,对马铃薯有效的土壤水分主要分布在80 cm以上土层,限量补灌可提高旱作马铃薯产量、大中薯率,降低小薯率;补灌量为35 mm时,产量显著提高,增产率达60.5%,且WUE和IWUE最高;超过35 mm后,随补灌量的增加,产量增加不显著且WUE降低.[结论]补灌量为35 mm即苗期补灌15 mm,薯块膨大期补灌20 mm为半干旱区全膜垄播马铃薯最佳限量补灌模式.
作  者：
YANG Xin-yu;KANG Yi-chen;ZHANG Wei-na;SHI Ming-fu;YAO Kai;QI Rong;QIN Shu-hao;College of Horticulture,Gansu Agricultural University;
关键词：
rain-fed potato;;deficiency irrigation;;whole-mulching ridge sowing;;yield traits;;water use efficiency
摘  要：
【Objective】 To explore the effects of limited supplementary irrigation on evapotranspiration,irrigation utilization rate,yield and yield characteristics of potato fields under on-ridge sowing with full mulching,and provide theoretical basis for the efficient utilization of rainwater in potato industry in semi-arid rain-fed farming areas.【Method】 The evapotranspiration,irrigation utilization rate,yield and yield traits of whole-mulching ridge sowing potato field were studied through field experiment.【Result】 The results showed that the soil effective moisture was mainly distributed in the soil layer above 80 cm,yield rates of big tuber and middle tuber potato were increased,and small tuber rates were decreased by limited supplementary irrigation under the condition of full-mulching ridge sowing.The yield was significantly increased by 60.5% when the deficiency irrigation amount was 35 mm,and WUE and IWUE achieved the highest.With the increasing of irrigation amount,the yield was not increased significantly and WUE decreased significantly.【Conclusion】 The optimal supplementary irrigation amount for whole-mulching ridge sowing in the semi-arid area was 35 mm,in which,15 mm in seedling stage and 20 mm in tube expansion period.

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