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现货Agricultural Drainage Principles And Practices[9781682511763]

1434 九五品

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作者Marcelo Gomes Miguez, Aline Pires Veról

出版社Intelliz Press LLC

ISBN9781682511763

出版时间2016-01

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纸张其他

正文语种英语

上书时间2023-08-08

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商品描述: Agriculture drainage is mainly of two types; surface drainage and sub-surface drainage. The function of the field drainage system is to control the water table, whereas the function of the main drainage system is to collect, transport, and dispose of the water through an outfall or outlet. In some instances one makes an additional distinction between collector and main drainage systems. Field drainage systems are differentiated in surface and subsurface field drainage systems. This book highlights on the principle and techniques of drainage systems. First chapter focuses on sustainable drainage systems. The aim of second chapter is to present the two models just described to develop their numerical solutions and compare the mass and energy transfers obtained with the Richards equation and the Boussinesq equation, both of which are subject to nonlinear radiation conditions in the drains. Third chapter focuses on tile drainage on agricultural lands from north -east Romania - experimental variants and technical efficiency. Fourth chapter highlights on dynamics and activity of iron-reducing bacterial populations in a west African rice paddy soil under subsurface drainage. The objectives of fifth chapter is maximizing utility from wastewater of fish farms in agriculture under arid regions conditions. The aim of sixth chapter is to evaluate sediment-water interactions upstream and downstream from tile drain outlets in three tile-fed agricultural drainage ditches in northwest Indiana. The specific objectives are to determine if benthic sediments were in equilibrium with water column TDP; if sediment ability to retain P varied upstream and downstream from tile drain outlets; and if seasonal variability existed in easily exchangeable nutrient (P and N) content of the benthic sediments. Seventh chapter aims to clarify the effect of using drainage water alone or in different proportions with River Nile on growth and nutritional status of young Taimour mango trees. Eighth chapter aims to solve the one-dimensional advection dispersion equation using the technique of finite differences, coupled with the Boussinesq equation in order to model the transport of solutes in subsurface drainage systems, assuming that the solute is concentrated in the liquid phase. The aim of ninth chapter is to generate information regarding olive-tree water consumption in Uruguay allowing irrigation adjustment, in order to promote a rational and sustainable use of both water and energy. Tenth chapter focuses on paleodrainage systems. Eleventh chapter provides an assessment of lime filter drainage systems. Twelfth chapter demonstrates the efficiency of combining radar and optical remote sensing data with a representative soil dataset for producing digital maps of soil drainage. In thirteenth chapter, we illustrate how the recognition of historical land use features, including water management structures, as a result of high resolution spatial data, affects the understanding of hydrologic processes and pathways. The objectives of fourteenth chapter are to determine tile drainage and fertilizer-N management practices effect on corn and sugarbeet yields; changes in the soil N availability; denitrification loss of N in the form of N2O; soil solution NO3 concentration at 60 cm soil depth, and NH3 volatilization loss of N in a poorly drained Fargo silty clay soil. Last chapter reviews on the planning of an agricultural subsurface drainage system. Drainage is an important and profitable practice for conservation farming. Through drainage, it is possible to improve crop production and to use more intensive farming practices on level land.

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