2953

2804

كارشناسي ارشد

﴿ مرتعداري﴾

اصفهان: دانشگاه صنعتي اصفهان، دانشكده منابع طبيعي

1384

پانزده، 129، [II]ص.: مصور، جدول، عكس، نمودار

جمالدين خواجه الدين ، عليرضا سفيانيان

حميدرضا كريم زاده، مهدي فرح پور

مهدي بصيري، مجتبي مدرس هاشمي

1395/12/07

كتابنامه

منابع طبيعي

مهندسي منابع طبيعي

ID2804

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

r CfiAbstractIn Iran vast rangelands areas have been changed to rain fed cereal fields Unfortunately it is stile continuing These fields are abandoned after a periodof time and left as uncultivated because of ecological unsuitability and loweconomical incomes so they become unutilized lands To conserve soil water and rangelands as well as stopping the land degradation one canchange these low benefit rain fed cereal fields to rain fed forage Onobrychisviciaefolia is one of these species which can be cultivated as rain fed forage The present study carried out to declare the factors that are influencing asuccessful and unsuccessful Onobrychis viciaefolia rain fed cultivation inChadegan Feraidan Feraidoonshahr and Semirom regions First of all ineach region five or six sites was selected On each site tow parts one samplesite was presenting successful field and the second site for unsuccessful rainfed cultivation On each site random samples were managed on few yearsold field and a new cultivated field Cultivated seed purity percentage wasexamined Also the topsoil layer depth chemical physical characteristic ofthe soils including the quantity of the Mg Ca K Na pH EC and lime werestudied Onobrychis and medicago life form was studied in every region The age of Onobrychis bushes were studied through the root samples aswell Three various experiments were managed to study the Onobrychis viciaefolia seedpod influence on its seed germination rate Also the allelopatic impact of Agropyron ripens and Scariola orientalis extracts on Onobrychis viciaefolia seed germination as a weed species were studied Finally the Onobrychis viciaefolia growth parameters relationships with the soil characteristics were analyze with RDA method using CANOCO software The three allelopatic experimental data were statistically analyzed with SAS software Soil clay minerals were identified by X ray diffraction It has been indicated that on some clay types the soil surface raises because of the winter freeze and consequently the Onobrychis viciaefolia root has been cut off few centimeters below the soil surface where it is nearly narrow at that point This study indicated the factors that cause unsuccessful rain fed Onobrychis viciaefolia cultivation They could be listed as the removal of soil surface the absence of top soil layer or a very shallow in depth soil clay type the Onobrychis viciaefolia life form allelopatic affect of weed species on Onobrychis viciaefolia seed germination or on its mature plants In addition its legume has substances which control the seedgermination llf tf 1 Ii 1 11 c iI

جمالدين خواجه الدين ، عليرضا سفيانيان

حميدرضا كريم زاده، مهدي فرح پور

مهدي بصيري، مجتبي مدرس هاشمي