| Cite this article: | 蒋丽媛,赵伟,杨圆圆,等.不同水质微咸水灌溉对蔬菜产量及 土壤盐分离子的影响[J].灌溉排水学报,0,():-. |
| jiangliyuan,zhao wei,yang yuanyuan,et al.不同水质微咸水灌溉对蔬菜产量及 土壤盐分离子的影响[J].灌溉排水学报,0,():-. |
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| Effects of Brackish Water Irrigation with Different Water Quality on Vegetable Yield and Soil Salt Ions |
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jiangliyuan1, zhao wei1, yang yuanyuan1, tang lei1, yang zhaosen1, chen zhijie2
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1.Weinan City Agricultural Technology Promotion Center;2.Bio-Agriculture Institute of Shaanxi
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| Abstract: |
| [Objective][Method]In order to explore the relationship among irrigation water quality, vegetable yield and soil salt ions,tomato and green vegetables were irrigated with E1(3.6 dS/m well water) , E2(1.96 dS/m well water) and E3(0.31 dS/m rain water) in 2018 and 2019, the effects of different treatments on vegetable yield, soil electrical conductivity and soil salt ions were studied. [Result]The results showed that the yield of tomato and green vegetable in E3 (rainwater) treatment was the highest, which was 30.9% and 138.8% higher than that in E2 and E1 treatment, and 431.4% and 2100% higher than that in E2 and E1 treatment, respectively. In the 0-60 cm soil layer, the soil conductivity increased with the increase of irrigation water conductivity. Among them, the soil conductivity of 0-20 cm E3 treatment was 833 us/cm. The E2 and E1 treatment increased by 40.9% and 211.2% respectively compared with E3 treatment, and the E1 treatment reached a significant level. The EC Value of soil conductivity showed a very significant positive correlation with soil salt ions Na+, K+, Ca2+, Mg2+, Cl- and SO42- (P<0.01), and a very significant negative correlation with HCO3-, among which Ca2+, Mg2+, Cl-, SO42-had the greatest impact on the EC Value of soil.[Conclusion]Under protected cultivation, the irrigation water with conductivity of 1.96-3.6 dS/m reduces the yield of tomato and green vegetables compared with rainwater, and improves the content of soil conductivity and salt ions ( Na+, K+, Ca2+, Mg2+, Cl- and SO42-). The irrigation water with conductivity of 3.6 dS/m seriously reduces the yield of vegetables. Therefore, we should pay attention to the quality of irrigation water when planting vegetables. |
| Key words: irrigation water quality;brackish water; yield; soil conductivity;soil salt ions |
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