Meriç Nehri (Türkiye) Teraslarında Oluşan Toprakların Bazı Profil ve Verimlilik Özelliklerinin Belirlenmesi
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Dosyalar
Tarih
2019
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Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu çalışma, Meriç Nehri’ne farklı uzaklık ve yükseklikte yer alan alüviyal teraslar üzerinde oluşmuştoprakların bazı profil ve verimlilik özelliklerini incelemek amacıyla yapılmıştır. Meriç nehrine dikeykonumda ve farklı uzaklıklarda yer alan dört farklı noktada açılan toprak profillerinin horizon tanımlamasıyapılmıştır. Söz konusu profillerden 28 adet bozulmuş toprak örneği alınarak bu örneklerde bazı fizikselve kimyasal analizler yapılmıştır. Profil 1 (P1), profil 3 (P3) ve profil 4 (P4)’ün bulunduğu arazilerde çeltiktarımı yapılırken, profil 2 (P2) çok uzun süreden beri mera olarak kullanılan bir arazi üzerindeincelenmiştir. Araştırma topraklarının organik madde içerikleri genel olarak “az” ve “çok az” olarakbulunmuştur. En yüksek organik madde değeri P2 de A1 horizonunda (%3,22) ve profil 4 de Aphorizonunda (%2,09)’dır. Toprakların pH değerleri genel olarak “hafif asit” ve “nötr” karakterde olupkireç içerikleri P2 de “kireçli”, diğer profillerde “az kireçli” sınıfındadır. Araştırma örneklerinde P2’detuzluluk sorununa rastlanmıştır. Bu profilde horizonların EC değeri A1 horizonunda 6,51 dS m-1 olarakbulunmuştur. Aynı şekilde bu horizonda Na içerikleri de çok yüksek bulunmuştur. P2, topoğrafik olarakdiğer profillere göre daha çukur bir konumda olup yılın önemli bölümünde su altında kalmaktadır. Bunedenle P2 genellikle yaş olup redoksimorfik özelliklere, yüksek kil içeriğine ve buna bağlı olarak fenadrenaj koşullarına sahiptir. P1, nehire en yakın konumda olup kum içeriği diğer profillere göre yüksektir.Katyon değiştirme kapasitesi (KDK) kil içeriğine bağlı olarak profil 2 de en yüksek, P1 de ise en düşüktür.Profillerde yarayışlı besin elementi içerikleri alt katmanlara doğru azalma göstermekle birlikte profillerinüst katmanlarında fosfor (P), demir (Fe), bakır (Cu), mangan (Mn) ve çinko (Zn) içerikleri “yeterli”bazılarında “fazla” düzeydedir. Buna karşın potasyum (K) içeriği sadece P2 de “yeterli”, diğerhorizonlarda “az” düzeyde bulunmuştur.
This study was conducted to determine profile and productivity characteristics of soils formed over the alluvial terraces located at different elevations and distances from Meriç River. Soil profiles were sampled at four different points located vertically at different distances from Meriç River and soil horizons were defined in these profiles. Twenty-eight disturbed soil samples were taken, and physico-chemical analyses were performed on these profile samples. While paddy farming is practices over the fields where profile 1 (P1), profile 3 (P3) and profile 4 (P4) are located, the field where profile 2 (P2) is located has long been used as pasture. Organic matter content of soils was generally “low” and “very low”. The highest organic matter contents were observed in A1 horizon of P2 (3.22%) and Ap horizon of P4 (2.09%). Soil pH values were generally “slightly acidic” and “neutral”. Soils were “calcareous” in P2 and “slightly calcareous” in the other profiles. Salinity was encountered in P2. Electrical conductivity (EC) of A1 horizon of this profile was measured as 6.51 dS m-1 . Sodium (Na) content of this horizon was also “very high”. As compared to other profiles, P2 was located at a lower elevation, thus wet through majority of the year. Therefore, P2 was generally wet and had redoximorphic characteristics, high clay content and thus poor drainage conditions. P1 was located at the closest position to the river, thus had highersand contents than the other profiles. Based on clay content, cation exchange capacity (CEC) was the greatest in P2 and the lowest in P1. Available nutrient contents of the profiles decreased through the depth of the profile. Phosphorus (P), iron (Fe), cupper (Cu), manganese (Mn) and zinc (Zn) contents of upper layers were “sufficient” and “excessive”. On the other hand, potassium (K) content was “sufficient” only in P2 and “low” in the other profiles.
This study was conducted to determine profile and productivity characteristics of soils formed over the alluvial terraces located at different elevations and distances from Meriç River. Soil profiles were sampled at four different points located vertically at different distances from Meriç River and soil horizons were defined in these profiles. Twenty-eight disturbed soil samples were taken, and physico-chemical analyses were performed on these profile samples. While paddy farming is practices over the fields where profile 1 (P1), profile 3 (P3) and profile 4 (P4) are located, the field where profile 2 (P2) is located has long been used as pasture. Organic matter content of soils was generally “low” and “very low”. The highest organic matter contents were observed in A1 horizon of P2 (3.22%) and Ap horizon of P4 (2.09%). Soil pH values were generally “slightly acidic” and “neutral”. Soils were “calcareous” in P2 and “slightly calcareous” in the other profiles. Salinity was encountered in P2. Electrical conductivity (EC) of A1 horizon of this profile was measured as 6.51 dS m-1 . Sodium (Na) content of this horizon was also “very high”. As compared to other profiles, P2 was located at a lower elevation, thus wet through majority of the year. Therefore, P2 was generally wet and had redoximorphic characteristics, high clay content and thus poor drainage conditions. P1 was located at the closest position to the river, thus had highersand contents than the other profiles. Based on clay content, cation exchange capacity (CEC) was the greatest in P2 and the lowest in P1. Available nutrient contents of the profiles decreased through the depth of the profile. Phosphorus (P), iron (Fe), cupper (Cu), manganese (Mn) and zinc (Zn) contents of upper layers were “sufficient” and “excessive”. On the other hand, potassium (K) content was “sufficient” only in P2 and “low” in the other profiles.
Açıklama
Anahtar Kelimeler
Kaynak
Türk Tarım - Gıda Bilim ve Teknoloji dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
7
Sayı
9
