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首页> 外文期刊>Journal of Soil Science and Environmental Management >Evaluation of some locally sourced phosphate rocks for oil palm production
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Evaluation of some locally sourced phosphate rocks for oil palm production

机译：评价一些当地生产的磷棕榈油棕榈油

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The effectiveness of?some?locally sourced phosphorus rocks (Sokoto Rock Phosphate (SRP), Crystallizer Super (CRY)) as?P2O5?fertilizers for manuring oil palm?applied on a long term basis (2000-2008)?were evaluated along with conventional imported single superphosphate fertilizer at Okomu Oil Palm Plc.,?Ovia?North East Local Government Area of Edo State, Nigeria.? The rocks were tested at the rates of 1.5, 2.5 and 3.5 kg/palm/year respectively (214.5, 357.5 and 500.5 kg/ha), and the single superphosphate at 1.0, 2.0 and 3.0 kg/palm/year?(143, 286 and 426 kg/ha). Urea (N), murate of potash (K), and kieserite (Mg) were applied as basal application at the rates of 0.5 kg N, 2.0 kg K and 0.2 kg mg/palm/year?(71.5, 286 and 28.6 kg/ha) to all treatment plots?except the control?(treatment without fertilizer application).?Treatments were laid out as Randomized Complete Block Design, replicated three times.?The phosphorus sources?enhanced soil pH and soil nutrient availability?and?thereby enhanced palm development and yield.? Applied phosphorus fertilizers had significant (P≤0.05) effect on mean bunch number?per?palm, mean single bunch weight and fresh fruit bunch (FFB) production. Palms?treated with?these?fertilizersperformed better than the control where no fertilizer was applied. Yield increases as rates of application increases?and the?optimum rates?appeared to be?2.0 kg SSP, 2.5 kg SRP and 2.5 kg CRY beyond which there was no corresponding yield increase. Locally sourcedP2O5?competed?favourably with?the?conventional inorganic single superphosphate as fertilizer for manuring oil palm.?However,?these?fertilizers are better?used in combined?formwith single superphosphate?due to their slow nutrients release?and?singly?when Single superphosphate is not readily available.? This along with basal application of N, K and Mg at the rates of 0.5, 2.0 and 0.2 kg /palm/year?(71.5, 286 and 28.6 kg/ha)?is very necessary?for optimum yield.
机译：评估了长期（2000-2008年）施用的某些局部来源的磷矿（Sokoto磷磷酸盐（SRP），结晶器超级（CRY））作为“ P2O5”肥料处理油棕的有效性。尼日利亚Odo的Okomu东北地方政府地区的Okomu Oil Palm Plc。分别以1.5、2.5和3.5公斤/棕榈/年（214.5、357.5和500.5公斤/公顷）的速度对岩石进行测试，而过磷酸钙分别以1.0、2.0和3.0公斤/棕榈/年的速度进行测试（143、286）。和426公斤/公顷）。尿素（N），钾肥（K）和钾铁矿（Mg）的基础施用量分别为0.5 kg N，2.0 kg K和0.2 kg mg / palm /年？（71.5、286和28.6 kg / ha）除对照以外的所有处理区（不施肥处理）。处理均按随机完整区组设计进行，重复三遍。磷源增强了土壤的pH值和土壤养分的利用率，从而增强了磷源。棕榈的发育和产量。施用磷肥对平均每串棕榈数，平均单串重量和新鲜水果串（FFB）产量有显着（P≤0.05）影响。用这些肥料处理过的棕榈的表现要好于未施肥的对照。产量随着施用量的增加而增加，并且最佳施用量似乎为2.0 kg SSP，2.5 kg SRP和2.5 kg CRY，在此之上没有相应的产量增加。本地采购的P2O5与传统的无机单一过磷酸钙作为肥料处理油棕的肥料相竞争。但是，由于这些肥料的养分释放缓慢，它们单独或与单一过磷酸钙的混合形式更好使用吗？当过磷酸钙不易获得时。为达到最佳产量，这是非常必要的，同时以0.5、2.0和0.2 kg / palm /年（71.5、286和28.6 kg / ha）的基础施用氮，钾和镁。

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