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首页> 外文期刊>Journal of Agronomy >Evaluation of Phosphate Rock Sources and Rate of Application on Oil Palm Yield Grown on Peat Soils of Sarawak, Malaysia
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Evaluation of Phosphate Rock Sources and Rate of Application on Oil Palm Yield Grown on Peat Soils of Sarawak, Malaysia

机译：马来西亚砂拉越泥炭土上磷岩源的评价及其在油棕产量上的施用量

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摘要

Malaysia has 2.4 million ha of peat and this type of soil is very poor in phosphorus and needs P application. As there are various sources of P fertilizer in the Malaysian market, it is crucial for growers to apply the most effective source for theircrops. In this research, two sources of phosphate rocks available in the local fertilizer market from Christmas Island (CIPR) and Morocco (MPR) at four rates were evaluated for maximum yields of Fresh Fruit Bunches (FFB) from oil palm grown on peat soilsin Sarawak, Malaysia. The CIPR and MPR at the rates of 0, 500,1000 and 2000 g plam~(-1) year-~(-1) were applied annually. FFB ha~(-1), average weight bunch~(-1) and leaf and soil nutrient concentrations were determined. Results showed that MPR treatments produced higher available soil P than CIPR treatments by average of 87% and also higher leaf P concentrations (up to 0.185%). Pearson's correlation indicated that available soil P was negatively correlated with K, Mg, B, Cu and Zn but positively correlated with Ca. In addition, P concentrations in leaves were positively correlated with Ca, Mg, B and Zn but were negatively correlated with K and Cu. Correlation of yield parameters and leaf nutrient concentrations revealed that bunch weights were negatively correlated with leaf P concentrations, Mg and B, whilst the total yield was negatively correlated with Mg and B. Maximum yields were obtained at CIPR-2000 and CIPR-1000 treatments. By interpolation maximum yields in MPR would be attained at MPR-750 treatment.
机译：马来西亚有240万公顷的泥炭，这种土壤的磷非常贫瘠，需要施磷。由于马来西亚市场上的磷肥来源多种多样，因此对于种植者而言，为作物应用最有效的磷肥至关重要。在这项研究中，评估了砂拉越州泥炭土壤上种植的油棕中从圣诞岛（CIPR）和摩洛哥（MPR）两种本地来源的化肥市场上以四种速率获得的磷酸盐岩的最大产量，这些新鲜果束的最大产量为FFB。马来西亚。每年使用CIPR和MPR的速率分别为0、500,1000和2000 g plam〜（-1）年〜（-1）。测定了FFB ha〜（-1），平均重量束〜（-1）以及叶和土壤养分浓度。结果表明，MPR处理比CIPR处理产生的土壤有效磷更高，平均为87％，并且叶片P浓度更高（高达0.185％）。皮尔逊相关性表明，有效土壤磷与钾，镁，硼，铜和锌呈负相关，而与钙呈正相关。另外，叶片中的磷含量与钙，镁，硼和锌呈正相关，而与钾和铜呈负相关。产量参数和叶片养分浓度的相关性表明，束重与叶片中P浓度，Mg和B呈负相关，而总产量与Mg和B呈负相关。在CIPR-2000和CIPR-1000处理下获得最大产量。通过插值，在MPR-750处理下将获得MPR的最大产量。

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