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首页> 外文会议>Second International Conference on Sustainable Agriculture for Food, Energy and Industry Vol.2 >Recycling of Oil Palm Wastes: Ten Year Application of Empty Fruit Bunches in an Oil Palm Plantation
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Recycling of Oil Palm Wastes: Ten Year Application of Empty Fruit Bunches in an Oil Palm Plantation

机译：油棕废料的回收：空果捆在油棕人工林中的十年应用

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Due to the current stringent Malaysian air quality regulations, oil palm empty fruit bunches (EFBs) which were previously incinerated are now returned to the oil palm field and as a mulch. A study was conducted to investigate the changes in soil chemical characteristics after 10 years of EFB application, as a mulch and source of nutrients, in an oil palm plantation.The study area was in Sepang Estate and had experimental plots receiving 3 treatments, i.e. (ⅰ) control without EFBs, (ⅱ) application of 150 kg EFB/palm/year and (ⅲ) application of 300 kg EFB/palm/yr with four replications, over a period of 10 years. The EFBs were applied in heaps in the middle of every 4 palms. Composite soil samples were taken with an auger at 20cm intervals up to 100cm depth for soil chemical analyses and Kubiena soil samples were taken from soil pits for determining changes in micromornhological characteristics. The soil was a highly weathered acidic soil, classified as a Typic Kandiudult. The cumulative addition of EFBs had increased the soil pH by two units with 300 kg EFB/tree, and a one unit increase with 150 kg EFB/tree in the 0 - 60 cm soil layer. The application of EFBs, even at the lower rate decreased significantly exchangeable Al contents and the cation exchange capacity increased with an increase in the EFB application rate up to 60cm soil depth. Overall increases in exchangeable bases were also observed in soils treated with empty fruit bunch. The increase was more evident in soils with 300 kg EFB/tree compared to 150 kg EFB/tree. The organic carbon in the topsoil increased from 1.49% to 2.50% and 2.73% in soils treated with 150 kg EFB/tree and 300 kg EFB/tree, respectively. There was an increase in total nitrogen with EFB application but only in the topsoil. Thin soil sections revealed that distinct differences between the treatments in the microstructure, size of the aggregates and nature of the soil organic matter.
机译：由于马来西亚目前严格的空气质量法规，以前被焚化的油棕空果串（EFB）现在被送回油棕田并覆盖。进行了一项研究，调查了油棕种植园10年EFB施用后作为覆盖物和养分来源的土壤化学特性的变化。研究区域位于雪邦村，并有接受3种处理的试验区，即（ ⅰ）不使用EFB的对照，（ⅱ）施用150公斤EFB /棕榈/年/年和（ⅲ）施用300公斤EFB /棕榈/年/年，四次重复，历时10年。 EFB应用于每4个棕榈树中间的堆中。用螺旋钻每20cm的间隔采集复合土壤样品，深度达100cm，以进行土壤化学分析，并从土坑中采集Kubiena土壤样品，以确定微形态学特征的变化。该土壤是高度风化的酸性土壤，被归类为典型的康迪度。 EFB的累积添加使0-60 cm土壤层中的土壤pH值增加了两个单位（300 kg EFB /树），增加了1个单位（150 kg EFB /树）。即使在较低的施肥量下，土壤深度达到60cm时，EFBs的施用也显着降低了可交换的Al含量，并且阳离子交换能力也随之增加。在用空果束处理的土壤中也观察到了可交换碱的总体增加。 EFB为300公斤/树的土壤比150 kg EFB /树的土壤增加更为明显。在以150 kg EFB /树和300 kg EFB /树处理的土壤中，表层土壤中的有机碳分别从1.49％增加到2.50％和2.73％。随着EFB的应用，总氮增加，但仅在表层土壤中增加。薄薄的土壤切片表明，在微观结构，团聚体的大小和土壤有机质的性质之间，处理之间存在明显差异。

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