ژانویه 3, 2017

بهینه سازی سیستم آبیاری پسته در زمینهای خشک

Optimisation of irrigation system in arid land pistachio orchards

M.T. Dastorania* , M. Heshmati b, M. A. Sadeghzadehc a Faculty of Natural Resources, University of Yazd, Iran b Faculty of Agricultural Sc., University of Rafsanjan, Iran c Faculty of Sciences, University of Yazd, Iran

۱. Introduction

Considerable fart of water in regionalcommon surface irrigation lost through channelsand waterways from source (pump) to theorchards because of deep percolation andevaporation, which has not been consideredhere. Water is the natural resource on whichhuman life, food security and the health ofecosystems depends to it. In the other word,water resources are one of the main essentialnatural resources for life as potable water,irrigation water and water for industrial uses.In dryland environments due to hightemperature, windy weather, and low humiditythere is a specific condition, where water shortage is the main limitation of development.Much of the available water for living peoplein dryland regions is found in large rivers thatoriginate from higher elevation. Groundwaterresources can be available to supportdevelopment. However, the relatively limitedrecharge of groundwater resources dependlargely on the amount, intensity, and duration ofthe rainfall as well as soil properties, the latterincluding infiltrations capacities and

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