نتایج جستجو برای: USDA-SCS
تعداد نتایج: 9694 فیلتر نتایج به سال:
Yağış, etkileri en geniş olan iklim parametrelerinden biridir. Tüm yağışlar toprağa sızmaz; bir kısmı buharlaşabilir; başka yüzey akışına dönüşebilir. Depolanan suyun yalnızca kısmı, bitkinin terleme ihtiyaçlarını karşılamak için kökler tarafından alınır. Bu nedenle, etkin yağışı bilmek gerekmektedir. çalışma, yağış miktarını hesaplamak ve tahmini kullanılan farklı yöntemleri karşılaştırmak ama...
با توجه به اهمیت حیاتی آب در زندگی بشر، شناخت دقیق کل باران و همچنین مقدار قابل استفاده یا مؤثر آن بهمنظور برنامهریزی اقتصادی و آب مورد نیاز در صنعت، شرب و کشاورزی ضروری است. شناسایی و بهکارگیری روشی مناسب برای برآورد بارش مؤثر بهخصوص در کشت دیم اهمیت دوچندانی دارد. در پژوهش حاضر بهمنظور تعیین مناسبترین روش تجربی برآورد بارش مؤثر در زراعت دیم، از دادههای آماری بارندگی 20 ساله (1991 تا 20...
The Curve Number (CN) rainfall–runoff model is a widely used method for estimating the amount of rainfall and runoff, but its accuracy in predicting runoff has been questioned globally due to failure produce precise predictions. was developed by United States Department Agriculture (USDA) Soil Conservation Services (SCS) 1954, data documentation about development are incomplete, making it diffi...
Genetics can help prevent mastitis and reduce somatic cell count. The purpose of this article is to inform producers, veterinarians, extension personnel, artificial breeding personnel, and genetics specialists about the methods and usefulness of genetics to improve milk quality. The USDA Animal Improvement Programs Laboratory [AIPL] has published genetic evaluations for Somatic Cell Score (SCS)...
Combining foreign daughter data with domestic information in dairy bull genetic evaluations has been shown to improve prediction of future domestic evaluations for US bulls. This study focused on the accuracy of Interbull evaluations of bulls with only foreign daughters, in predicting the latest domestic evaluations (based on US daughters). August 2003 USDA evaluations based only on US daughter...
The rainfall and runoff relationship becomes an intriguing issue as urbanization continues to evolve worldwide. In this paper, we developed a simulation model based on the soil conservation service curve number (SCS-CN) method to analyze the rainfall-runoff relationship in Guangzhou, a rapid growing metropolitan area in southern China. The SCS-CN method was initially developed by the Natural Re...
The rainfall and runoff relationship becomes an intriguing issue as urbanization continues to evolve worldwide. In this paper, we developed a simulation model based on the soil conservation service curve number (SCS-CN) method to analyze the rainfall-runoff relationship in Guangzhou, a rapid growing metropolitan area in southern China. The SCS-CN method was initially developed by the Natural Re...
The SCS-CN developed by the USDA Soil Conservation Service is a widely used technique for estimation of direct runoff from rainfall events. The watershed CN represents the hydrological response of watershed as an indicator of watershed potential runoff generation. The aim of this research is determining the CN from recorded rainfall-runoff events in different seasons and analyzing its relations...
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