负压灌溉对设施草莓生长及养分吸收的影响

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中图分类号：S668.4，S275 文献标识码：A

Effect of Negative Pressure Irrigation on Growth and Nutrient Absorption of Strawberry

JIA Yan1， LIU Wei 1，2 ，WANG Guoping²，GUO Hua2 ，GAO Fei1， FAN Xinping² （1.College of Horticulture，Shanxi Agricultural University，Jinzhong Shanxi O3o8oo，China; 2.Pomology Institute，Shanxi Agricultural University，Taiyuan Shanxi O3oo31，China）

Abstract：【Objective】To determine the optimal irigation negative pressurevalue for eficient water-saving irigation techniques，theefectsofnegativepressureirigationonthegrowthandnutrientabsorptionofgreenhousestrawberieswere investigated.【Methods】Using‘Santa’and‘Benihoppe’strawberries as experimental materials，a pot experiment waconducted with manual irrigation as the control group （CK）. Two negative pressure levels （ -5kPa and -10kPa ）were compared to assess teir efects on soil moisture status，water consumption，growth performance，and nutrient absorption.【Results】 Compared to CK，the cumulative irrigation water volume for‘Santa’decreased by 11.40% and 64.74% under -5kPa and -10kPa treatments，respectively，while‘Benihoppe’decreased by 43.60% and 79.04% . In terms of growth indicators，the -5kPa treatment showed no significant difference from CK，while the -10kPa treatment was significantly lower. For‘Benihoppe’，multiple growth indicators were comparable to CK under the -5kPa treatment but significantly declined under the -10kPa treatment. Aditionally，the nitrogen，phosphorus，and potassium content and absorption in the aboveground parts， as well as nitrogen and phosphorus translocation/accumulation，were significantly higher than CK under the -5 kPa treatment. 【Conclusion】 The -5kPa negative pressure irrigation condition was successfully identified as suitable for enhancing the productioneficiencyof grenhousestrawberries，providingatheoreticalbasisfortheeficientutilizationof waterresources in modern agriculture and the innovation of agronomic water-saving technologies.

Key words：strawberry；negative presure irrigation；growth and development；water consumption;nutrient absorption草莓（Fragaria x ananassa Duch.），隶属于 蔷薇科，是一种多年生的浆果类植物。（剩余9671字）