WANG Fang, ZHA Qing, ZHAO Jie, et al. Effects of Deep Storage Irrigation on Soil Moisture Dynamics of Summer Maize Farmland[J]. 2023, 37(2): 246-252.
DOI:
WANG Fang, ZHA Qing, ZHAO Jie, et al. Effects of Deep Storage Irrigation on Soil Moisture Dynamics of Summer Maize Farmland[J]. 2023, 37(2): 246-252. DOI: 10.13870/j.cnki.stbcxb.2023.02.028.
Effects of Deep Storage Irrigation on Soil Moisture Dynamics of Summer Maize Farmland
In order to explore the feasibility of supplementing soil water and groundwater by using rainfall and flood resources in flood season
the experiment was carried out in maize field plots from June to October 2020
monitoring the characteristics of soil water dynamic changes under one-time deep storage irrigation with different planned water storage depths (T1:Hp=60 cm;T2:Hp=90 cm;T3:Hp=120 cm;T4:Hp=150 cm;T5:Hp=180 cm) and saturated water content as the upper limit of irrigation
and studying the quantitative farmland water dynamics of groundwater replenishment
so as to provide the basis for formulating the deep storage irrigation system for effectively replenishing soil water storage.The results showed that deep storage irrigation could effectively replenish the farmland soil moisture.After 10 days of irrigation
the average water content of 0—200 cm soil layer of each treatment increased by 11.90%~40.85%
and the water content of T5 treatment had the highest water content increase.With the increase of the planned water storage depths
evapotranspiration of summer maize farmland increased first
then decreased
and finally rose to the highest level
and the treatment reached the maximum in the 90 cm planned wetting layer.When the planned water storage depths were 60 cm and 90 cm
the supplementary water was mainly used to recharge shallow soil and farmland evapotranspiration
which was not conducive to soil water storage.When the planned water storage depths were more than 120 cm
the water supply of deep soil by irrigation and rainfall was more than 243.39 mm
accounting for more than 27.29% of the total water supply.In conclusion
deep storage irrigation was an effective irrigation method to replenish soil water
and selecting the planned water storage depths above 120 cm for deep storage irrigation could effectively optimize the water resources allocation and replenish shallow soil water storage and even groundwater.
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references
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Optimization of Maize Irrigation in Ili River Basin Based on AquaCrop Model
Dynamic Variety of Soil Nutrient Content Under Conditions of Straw Mulching and Irrigation
Effect of Regulated Deficit Irrigation on Physiological and Photosynthetic Characteristics of Summer Maize and Its Optimized Combination of Agronomic Techniques
Water and Nitrogen Utilization and Apparent Budget of Soil Nitrogen under Different Types of Nitrogen Fertilizer and Different Application Rates in Summer Maize
Dynamic Variety of Soil Nutrient Content Under Conditions of Straw Mulching and Irrigation
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Related Institution
Yili Vocational and Technical College, Yining
Key Laboratory of Northwest Oasis Water-Saving Agriculture, Ministry of Agriculture and Rural Affairs
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Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production and Construction Corps, Shihezi University
College of Water Conservancy and Architectural Engineering, Shihezi University