|Table of Contents|

Effects of Water Regulation Methods on Greenhouse Tomato and Soil Salt in Coastal Saline Alkali Land

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年11
Page:
57-62
Research Field:
Publishing date:

Info

Title:
Effects of Water Regulation Methods on Greenhouse Tomato and Soil Salt in Coastal Saline Alkali Land
Author(s):
ZHANG Guoxin; YAO Yutao; SUN Yeshuo; DING Shoupeng
(Coastal Agriculture Institute,Hebei Academy of Agriculture and Forestry Sciences,Tangshan,Hebei 063299)
Keywords:
coastal saline-alkali land; protected tomato; soil matrix potential; yield; quality; soil salinity
PACS:
-
DOI:
10.11937/bfyy.20203745
Abstract:
‘Jinpeng No.1’ was used as the research material.The effects of soil substrate potential on the growth,quality and soil salinity of tomato in the flowering and fruit period under the condition of drip irrigation in the solar greenhouse in the coastal saline-alkali area were studied by controlling the lowest limit of soil substrate potential (-5 kPa,T1;-10 kPa,T2;-15 kPa,T3;-20 kPa,T4;-25 kPa,T5),in order to provide a reference for the coastal saline-alkali field facility tomato irrigation system.The results showed that the greater the substrate potential,the higher the growth rate of plant height.The stem thickness of T1 was the highest,and the variation was not obvious among other treatments.The lycopene content gradually increased with the matrix potential decreasing,showed a negative correlation,while the change of vitamin C was positively correlated with the matrix potential.As the substrate potential decreased,the plot yield,single fruit weight,and irrigation frequency gradually decreased,while the water utilization rate increased significantly.As the soil matrix potential decreased,the electrical conductivity of the three soil layers of 0-20 cm,20-40 cm,and 40-60 cm of the 5 treatments all gradually increased,and the conductivity of the soil layer of 40-60 cm was the highest.The average of the 5 treatments reached 1.84 dS?cm-2,which was 60% higher than 0-40 cm.In general,it is more appropriate to use the soil substrate potential higher than -10 kPa to guide irrigation during the flower and fruit period for water-saving and quality-improving cultivation of tomatoes in coastal saline-alkali land.

References:

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Last Update: 2021-08-23