منابع مشابه
Deficit irrigation for reducing agricultural water use.
At present and more so in the future, irrigated agriculture will take place under water scarcity. Insufficient water supply for irrigation will be the norm rather than the exception, and irrigation management will shift from emphasizing production per unit area towards maximizing the production per unit of water consumed, the water productivity. To cope with scarce supplies, deficit irrigation,...
متن کاملApplication of the SWAP model to simulate water-salt transport under deficit irrigation with saline water
The agro-hydrological Soil–Water–Atmosphere–Plant (SWAP) model was calibrated and validated to simulate water–salt transport based on field experiments in an arid region of China. The simulation results show lower soil water content but higher salt concentration under deficit irrigation. Soil water and salinity below 95 cm at 80% evapotranspiration (ETc ) treatments and 65 cm at 60% ETc treatme...
متن کاملIrrigation water management under risk: An application to Cyprus
In this paper we provide empirical evidence that attitudes towards risk are important when assessing the impact of conservation policies on production choices. In the case of an irrigation water quota, deriving water demand responses from a multi-input farmer decision model under risk has to account for unobserved risk attitudes. We first follow the approach of Antle (1987) based on higher-orde...
متن کاملModification of transient state analytical model under different saline groundwater depths, irrigation water salinities and deficit irrigation for quinoa
Salinization of soil is primarily caused by capillary rise from saline shallow groundwater orapplication of saline irrigation water. In this investigation, the transient state analytical modelwas modified to predict water uptake from saline shallow groundwater, actual cropevapotranspiration, soil water content, dry matter, seed yield and soil salinity under differentsaline groundwater depths, i...
متن کاملestimation soil water content under deficit irrigation by using dssat
crop models need more evaluation and study for use in deficit irrigation. the main objective of this paper was to study the efficiency and accuracy of dssat model, in estimating of moisture in the soil profile under two levels of water application¬¬¬ in silage maize field. two irrigation treatments including deficit irrigation (0.7 smd), and a full irrigation (smd) were considered for two years...
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ژورنال
عنوان ژورنال: Al-Rafidain Engineering Journal (AREJ)
سال: 2020
ISSN: 2220-1270
DOI: 10.33899/rengj.2020.126551.1011