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بخشی از متن دانلود Agronomic and Economical assessment of Atriplex Species planting under different saline soil levels فایل ورد (word) :
نام کنفرانس یا همایش : سومین کنفرانس بین المللی پژوهشهای کاربردی در علوم کشاورزی
تعداد صفحات : 6
چکیده مقاله:
The purposes of this study were to investigation of agronomy effects of different species Atriplex planting in different salinity soil levels, estimation of economic and profitability indexes of species and selecting of the best spiece under soil salinity based on agronomic and economic. This study carried out in Norodin Abad Garmsar is located approximately 150 km southeast of Tehran, Iran in 2009-2011. Collected seeds species of Atriplex Canescense, A. lentiformis, A. halimus, A. leucuclada in Sline area of target regions . Sown of four species in a Highly Salinity, Medium and Lowly Saline field by Randomized block design (RCB) with three replication for three years and three levels salinity. Economical method for selecting of treatments was Partial Budgeting Technique(PBT). Economical results show that, the share of costs including Preparation of Sowing, planting, Plant Care and harvesting was estimated 10% , 44.4% , 23.3% and 22.3%, respectively. Based on yield, price, cost and gross income of different species planting, Net profit of Atriplex planting including (A. Canescense, A. Lentiformis and A. Halimus) in different salinity soil levels (Highly Salinity and Medium. Salinity ) was negative, but, under salinity soil level (Lowly Salinity ) was positive. In this study, Net profit of Atriplex Leucuclada planting in different salinity soil levels (Highly Salinity, Medium. Salinity and Lowly Salinity ) was estimated positive and 461, 627.4 and 752 $/ha, respectively. Profitability and non-profitabilit hypothesis test of substitution of treatments showed that replacement of Atriplex Leucuclada planting under lowly salinity soil level by other treatments was None profitable, because, replacement of other treatments insisted this selected treatment , cost is constant and income decreased. Net profit of Atriplex Leucuclada planting under lowly salinity soil level was estimated 752 $/ha, that more than other treatments. Thus, based on economical assessment, plantig of Atriplex Leucuclada with lowly salinity soil level suggested the best treatments in target region.