2/15/2024 0 Comments Hydrus Network 546 free download![]() ![]() Access to the dimensions of the soil wetting pattern will help better determine the cover plant roots and emitter spacing, reduce the cost, and improve water use efficiency. The similarity between the soil wetting pattern and the distribution area of the crop root system is one of the critical factors used to improve irrigation performance ( Wang et al. The water available in the soil has a wetting pattern, the size and shape of which limit the growth of root systems and crop yields. ![]() It helps transport water to the soil near plant roots, hence reducing water losses (from evaporation and deep drainage) and improving plant growth and water conservation ( Sharmasarkar et al. Therefore, the proposed model of this study is efficient and simple, which can help accurately estimate the soil wetting pattern of drip irrigation with a variety of soil textures.ĭrip irrigation is one of the most common irrigation technologies, which is widely used for its high efficiency in water-saving. Compared with the existing models, the proposed model was more consistent between the measured and simulated values. For different experiments, the mean absolute error, root mean square error, and mean relative error varied from 2.77 to 4.69 cm, 6.20 to 10.61 cm, and 5.61% to 10.51%, respectively. The estimated values were then compared with measured or simulated wetting front advance values. ![]() ![]() In this study, the wetting front advance data of 12 typical soil textures were obtained in Hydrus-2D/3D. This research aimed to develop a soil wetting pattern estimation model for drip irrigation that included four easily measurable parameters (i.e., initial soil water content, saturated hydraulic conductivity, total volume of applied water, and emitter discharge rate) based on dimensional analysis theory. Ignoring the effect of the initial soil water content on the soil wetting pattern affects the accuracy of the estimated results to a certain extent. Accurately estimating the soil wetting pattern that closely reflects the measured value can improve the water use efficiency for drip irrigation. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |