{"title":"土壤性质、吸磷特性与大豆(Glycine Max (L.))最佳产量的关系mr .)对benue的一些概念进行了分析","authors":"A. Bemgba, F. Ibrahim","doi":"10.14303/IRJAS.2015.027","DOIUrl":null,"url":null,"abstract":"Phosphorus (P) sorption influences P requirement of Nigerian soils. Four Inceptisols in Benue state were therefore used to examine the influence of soil properties on sorption indices and yield of soybean. Soil inorganic P was fractionated using standard procedures. Sorption characteristics were determined in 0.01 M CaCl2 solutions of various P concentrations. For each soil, the amounts of P that gave 0.025, 0.05, 0.075, 0.100, 0.125, 0.150, 0.175, 0.200, 0.225, 0.250 mg/kg solution concentration and the buffering capacity were estimated from adsorption curves. In the greenhouse, 4 kg of soil from each location was placed in plastic pots. Amount of P estimated from sorption study was added as KH2PO4. The treatments were laid out in Randomized Complete Block Design (RCBD) and soybean seed variety (TGx 1448-2E) was planted and observed to maturity. At harvest, the shoot was dried, weighed, milled and digested in a 4:1 HNO3:HClO4 mixture and analyzed for P. Optimum solution P concentration (SPC) was determined for each soil in relation to yield. The P adsorption capacities (K) of the soils related significantly to P in biomass (r=0.661). High grain yield (t/ha) was obtained at 0.025 mg P/kg SPC in Abeda-Mbadyul (8.5) and Otobi-Akpa (12.5) while 5.4 t/ha was obtained in Tor-donga and 4.1 t/hain Odobaat 0.10 mg P/kg SPC in the green house experiment. Slightly higher grain yield was obtained at Otobi (6.4t/ha) in the field trial than the estimated SPC values. Buffering capacities of soils varied and related significantly with seed weight (r= 0.605) and P in biomass (r=-0.667). Consequently, Odoba would require highest P fertilizer application (604.84 Kg P/ha), Tor-Donga (112.31), Abeda-Mbadyul (105.93) and Otobi (33.18)","PeriodicalId":14478,"journal":{"name":"International Research Journal of Agricultural Science and soil Science","volume":"1 1","pages":"51-57"},"PeriodicalIF":0.0000,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Relationship between soil properties, p sorptioncharacteristics and fertilizer p for optimum yield ofsoybean (Glycine Max (L.) Merr.) on some inceptisols inBenue\",\"authors\":\"A. Bemgba, F. Ibrahim\",\"doi\":\"10.14303/IRJAS.2015.027\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Phosphorus (P) sorption influences P requirement of Nigerian soils. Four Inceptisols in Benue state were therefore used to examine the influence of soil properties on sorption indices and yield of soybean. Soil inorganic P was fractionated using standard procedures. Sorption characteristics were determined in 0.01 M CaCl2 solutions of various P concentrations. For each soil, the amounts of P that gave 0.025, 0.05, 0.075, 0.100, 0.125, 0.150, 0.175, 0.200, 0.225, 0.250 mg/kg solution concentration and the buffering capacity were estimated from adsorption curves. In the greenhouse, 4 kg of soil from each location was placed in plastic pots. Amount of P estimated from sorption study was added as KH2PO4. The treatments were laid out in Randomized Complete Block Design (RCBD) and soybean seed variety (TGx 1448-2E) was planted and observed to maturity. At harvest, the shoot was dried, weighed, milled and digested in a 4:1 HNO3:HClO4 mixture and analyzed for P. Optimum solution P concentration (SPC) was determined for each soil in relation to yield. The P adsorption capacities (K) of the soils related significantly to P in biomass (r=0.661). 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引用次数: 0
摘要
磷吸附影响尼日利亚土壤对磷的需要量。以贝努埃州4个不同土壤为研究对象,考察了土壤性质对大豆吸附指标和产量的影响。采用标准方法对土壤无机磷进行分馏。测定了在0.01 M不同磷浓度CaCl2溶液中的吸附特性。通过吸附曲线估算出各土壤在0.025、0.05、0.075、0.100、0.125、0.150、0.175、0.200、0.225、0.250 mg/kg溶液浓度下的磷含量和缓冲能力。在温室里,每个地点的4公斤土壤被放入塑料盆里。用KH2PO4加入吸附量估算的P。采用随机完全区设计(RCBD)处理,种植大豆品种TGx 1448-2E,观察其成熟。收获时,将嫩枝干燥、称重、碾磨,并在4:1 HNO3:HClO4混合物中消化,分析磷含量,确定每种土壤的最佳溶液磷浓度(SPC)与产量的关系。土壤对磷的吸附量(K)与生物量中磷含量呈显著相关(r=0.661)。在温室试验中,Abeda-Mbadyul(8.5)和Otobi-Akpa(12.5)在0.025 mg P/kg SPC条件下获得高产(t/ha), Tor-donga和Odobaat (0.10 mg P/kg SPC)分别获得5.4 t/ha和4.1 t/ha。在大田试验中,Otobi获得的粮食产量(6.4t/ha)略高于SPC估计值。土壤的缓冲能力与种子重(r= 0.605)和生物量磷含量(r=-0.667)呈显著相关。因此,Odoba的磷肥施用量最高(604.84 Kg P/ha), Tor-Donga (112.31 Kg P/ha), Abeda-Mbadyul (105.93 Kg P/ha)和Otobi (33.18 Kg P/ha)。
Relationship between soil properties, p sorptioncharacteristics and fertilizer p for optimum yield ofsoybean (Glycine Max (L.) Merr.) on some inceptisols inBenue
Phosphorus (P) sorption influences P requirement of Nigerian soils. Four Inceptisols in Benue state were therefore used to examine the influence of soil properties on sorption indices and yield of soybean. Soil inorganic P was fractionated using standard procedures. Sorption characteristics were determined in 0.01 M CaCl2 solutions of various P concentrations. For each soil, the amounts of P that gave 0.025, 0.05, 0.075, 0.100, 0.125, 0.150, 0.175, 0.200, 0.225, 0.250 mg/kg solution concentration and the buffering capacity were estimated from adsorption curves. In the greenhouse, 4 kg of soil from each location was placed in plastic pots. Amount of P estimated from sorption study was added as KH2PO4. The treatments were laid out in Randomized Complete Block Design (RCBD) and soybean seed variety (TGx 1448-2E) was planted and observed to maturity. At harvest, the shoot was dried, weighed, milled and digested in a 4:1 HNO3:HClO4 mixture and analyzed for P. Optimum solution P concentration (SPC) was determined for each soil in relation to yield. The P adsorption capacities (K) of the soils related significantly to P in biomass (r=0.661). High grain yield (t/ha) was obtained at 0.025 mg P/kg SPC in Abeda-Mbadyul (8.5) and Otobi-Akpa (12.5) while 5.4 t/ha was obtained in Tor-donga and 4.1 t/hain Odobaat 0.10 mg P/kg SPC in the green house experiment. Slightly higher grain yield was obtained at Otobi (6.4t/ha) in the field trial than the estimated SPC values. Buffering capacities of soils varied and related significantly with seed weight (r= 0.605) and P in biomass (r=-0.667). Consequently, Odoba would require highest P fertilizer application (604.84 Kg P/ha), Tor-Donga (112.31), Abeda-Mbadyul (105.93) and Otobi (33.18)