|Table of Contents|

Effects of Different Soil Matric Potential on Growth and Water Use Efficiency of Greenhouse Cucumbers in Saline-alkali Land

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年14
Page:
60-66
Research Field:
Publishing date:

Info

Title:
Effects of Different Soil Matric Potential on Growth and Water Use Efficiency of Greenhouse Cucumbers in Saline-alkali Land
Author(s):
YAO Yutao; ZHANG Guoxin; DING Shoupeng; SUN Yeshuo; DING Fengjie
(Coastal Agriculture Institute，Hebei Academy of Agriculture and Forestry Sciences/Hebei Technical Research Center of Saline-alkali Soil Greening Project/Tangshan Key Laboratory of Plant Salt Tolerance Research,Caofeidian，Hebei 063200)
Keywords:
soil matric potential; greenhouse cucumber; growth index; quality; yield; abnormal fruit ratio; WUE
PACS:
-
DOI:
10.11937/bfyy.20193725
Abstract:
‘Jingyan Spring and Autumn Green 2’ was used as material，using the method of guiding cucumber irrigation with different soil matric potential，the growth，yield，quality and water use efficiency of cucumber were studied under four conditions of soil matric potential treatments，namely S1(-10 kPa)，S2(-15 kPa)，S3,(-20 kPa) and S4(-25 kPa).The results showed that with the decrease of soil matric potential at 0.2 m depth，the irrigation water quantity decreased obviously，the plant height，stem diameter and LAI decreased significantly with the decrease of soil matric potential，and the root-shoot ratio of cucumber plants increased at first and then decreased with the decrease of substrate potential，and the root-shoot ratio of S2 treatment reached the maximum.The photosynthetic indexes such as net photosynthetic rate，stomatal conductivity，transpiration rate and intracellular CO2 concentration decreased with the decrease of soil matric potential，and there were significant differences among the four treatments.With the decrease of irrigation water quantity，the abnormal fruit ratio of cucumber increased gradually，and the abnormal fruit ratio of S4 treatment was the highest (12.70%).Cucumber yield decreased with the decrease of soil matric potential，there was no significant difference between S1 and S2 treatments by variance analysis，there was significant difference between S3 and S4 treatments，and WUE increased significantly with the decrease of soil matric potential.In summary，there was no significant difference in cucumber yield between S2 treatment and S1 treatment，but the yield of S3 and S4 treatments decreased significantly，and the quality indexes of S2 treatment basically reached the maximum value，-15 kPa was the lower limit of soil matric potential for cucumber irrigation in saline-alkali land.

References:

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Last Update: 2020-09-15