عنوان :
مدل سازي شارهاي انتقال روي از خاك به برخي گياهان زراعي و تاثير ويژگي هاي خاك، گياه و عوامل مديريت زراعي بر آن در شرايط خشك
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي
صفحه شمار :
پانزده،172ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
مجيد افيوني، امير حسين خوش گفتار منش
استاد مشاور :
محمد علي حاج عباسي، حسين خادمي
توصيفگر ها :
شارروي , اكوسيستم زراعي , روند انباشت
تاريخ نمايه سازي :
14/9/89
استاد داور :
مهدي همايي، حسين شيراني، محمدرضا مصدقي
كد ايرانداك :
ID317 دكتري
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Modeling Zinc Fluxes from Soil into Selected Crops and their Dependence on Soil Plant and Land Management Factors under Arid Regions Mahin Karami E mail address mahinkarami@yahoo com 8 August 2010 Department of Soil Science Isfahan University of Technology Isfahan 84156 83111 Iran Supervisor Majid Afyuni E mail address afyuni@cc iut ac ir Supervisor Amir Hossein Khoshgoftarmanesh E mail address amirkhosh@cc iut ac ir Advisor Mohammad Ali Hajabbasi Advisor Hossien Khademi Advisor Rainer Schulin Department Graduate Program Coordinator Farshid Norbakhsh Department of Soil Science College of Agriculture Isfahan University of Technology Isfahan Iran Institute of Terrestrial Ecosystems ETH Zurich Universitaetstr 16 CH 8092 Zurich Switzerland Abstract The objectives of this study were to assess Zn status of soils in Fars Isfahan and Qom provinces of Iran to model the relationship between wheat and rice grain Zn and agro ecosystem parameters to calculate the Zn fluxes from soil into plants and modeling accumulation rate of Zn in the agro ecosystems of study area About 222 soil 0 30 cm and plant wheat and rice samples were collected randomly from the agricultural soils Linear regression models were fitted by least square and robust methods to model soil Zn and grain Zn of wheat and rice and agro ecosystem parameters relationships Zinc fluxes from soil to plants and Zn accumulation rates in the agro ecosystems were computed using mass flux assessment MFA model Agricultural information was used to quantify Zn fluxes and Zn accumulation rate The results indicated that total Zn concentration of soils were in normal ranges and the DTPA extractable Zn concentrations were above the critical levels in 84 of the surveyed fields Zinc concentration of wheat grains was mostly sufficient with respect to plant nutrition but its bioavailability for consumers was generally low in more than 75 of the samples because of high phytic acid to Zn molar ratio The regression analysis showed that Zn status of agricultural soils and wheat grains could be expressed as a function of soil properties and other ecosystem parameters on a regional scale Zinc mass fluxes from soil to grains were in range of 62 158 g ha 1yr 1 and 69 120 g ha 1yr 1 for wheat and rice respectively Modeling Zn accumulation rate indicated that Zn is accumulating considerably in the agricultural soils of the study region The major Zn input routes to the agricultural soils are manure and mineral fertilizers on the regional scale Keywords Modeling Zn flux Agro ecosystem Znic accumulation rate
استاد راهنما :
مجيد افيوني، امير حسين خوش گفتار منش
استاد مشاور :
محمد علي حاج عباسي، حسين خادمي
استاد داور :
مهدي همايي، حسين شيراني، محمدرضا مصدقي
