[1]LI Jingang,WANG Shaoli,HE Pingru,et al.Discussion on Saline Water Irrigation Quota for Tomato in Hetao Irrigation Zone[J].Research of Soil and Water Conservation,2020,27(04):327-335.
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Discussion on Saline Water Irrigation Quota for Tomato in Hetao Irrigation Zone
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 04
Page number:
327-335
Column:
Public date:
2020-06-20
- Title:
- Discussion on Saline Water Irrigation Quota for Tomato in Hetao Irrigation Zone
- Keywords:
- saline water irrigation; irrigation quota; field experiment; tomato
- CLC:
- S274.1
- DOI:
- -
- Abstract:
- To study the effects of saline water irrigation quota for each application on crops and soil salt content, a field experiment about saline water irrigation was carried out in Yichang irrigation area, and the tomato was selected as the test crop. There were four saline water irrigation quota levels such as 20 mm(WH1), 30 mm(WH2), 40 mm(WH3), 50 mm(WH4), and the control treatment of fresh water irrigation with 20 mm was settled additionally, tensiometers were buried at 20 cm underneath the dripper to trigger irrigation by controlling the soil matrix(-25 kPa). The effects of saline water irrigation quota for each application on tomato seedlings survival rate, plant architecture, fruit yield, fruit quality, soil salinization and economic benefits were investigated. The results indicated that the survival rate for saline water irrigation decreased by 6.38%～19.15% compared with that of fresh water irrigation at seeding stage; there was no significant effects of saline water irrigation for each application on the stem diameter, fruit number per plant, fruit soluble solids and total sugar content, fruit total acid of tomato decreased with the increase of brackish water irrigation quota; when the saline water irrigation quota for each application reached 30 mm, tomato yield got the maximum, which increased by 9.86% compared with that of fresh water irrigation, meanwhile, the accumulated soil salt beneath the plastic film was the least, while the net benefit achieved the maximum, which was 11.73% higher than that of fresh water drip irrigation. Considering tomato yield, fruit quality, soil salinization and economic benefit, the present study suggest that, the irrigation quota of shallow underground brackish water for each application was 30 mm, and equipped with 10 times irrigation events during tomato growth period, moreover, effective agronomic measures should be taken to ensure the high seedlings survival rate, additionally, supplementary irrigation is required in the autumn or next spring for soil salt leaching and soil moisture storage.
- References:
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Last Update:
2020-07-09