咖啡壳堆肥与NPS肥混用对埃塞俄比亚Haru地区咖啡土壤理化性质及产量的影响

Gemechu Chali, Tesfaye Wakgari
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引用次数: 2

摘要

无机和有机肥料的综合施用是补充农业土壤植物养分的主要来源。然而,根据土壤类型和作物种类选择这些资源的最佳组合是必要的。在此背景下,在春研究中心进行了2018/2019年咖啡壳堆肥和NPS肥对咖啡土壤理化性质和产量的影响的田间试验。试验采用完全随机区组设计,分别施不同比例的堆肥和NPS肥。种植前后分别取土壤样品。分析确定的土壤理化和农艺数据使用统计分析系统软件(9.3版)的GLM程序进行方差分析。结果表明:咖啡壳堆肥与NPS肥料配施能显著提高土壤含水量和孔隙度,降低土壤容重;咖啡壳堆肥处理后,土壤pH值随施用堆肥的碱度增加而增加。与无机肥料配合施用咖啡壳堆肥可提高土壤有机质、全氮、速效磷、速效硫、交换性基和CEC含量。咖啡壳堆肥(7.5 t hm2)与无机氮磷肥(50 kg hm2)配施能较好地提高咖啡作物产量。本试验站试验马纳西武1号的产量为1.59 t / h。因此,根据研究结果可以得出结论,在研究区土壤pH较低的条件下,必需养分(如P、N、K、Ca、Mg和Mo)的有效性受到严重影响。这表明Haru研究分中心的强酸pH值需要更多的关注。此外,研究区土壤CEC、有机碳、全氮和速效磷含量较低,证实了土壤肥力是制约Haru地区咖啡可持续生产的因素之一。不同比例的NPS肥与咖啡壳堆肥配合施用,改善了土壤理化性质,提高了咖啡产量。然而,该地区潜在的咖啡产量尚未得到开发。综合施用当地速效咖啡壳堆肥和NPS混合肥料可以缓解研究区土壤肥力问题。研究建议使用7.5吨/公顷的咖啡壳堆肥和50公斤/公顷的NPS 1
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Effect of Integrated Use of Coffee Husk Compost and NPS Fertilizer on Soil Physicochemical Properties and Yield of Coffee (Coffea arabica L.) at Haru, Ethiopia
: Integrated application of inorganic and organic fertilizers is the main sources for replenishing plant nutrients in agricultural soils. However, selecting the optimum combination of these resources based on soil type and crop species is necessary. In this context, field experiment was conducted at Haru research center to assess the effect of coffee husk Compost and NPS Fertilizer on soil physicochemical properties and Yield of coffee in 2018/2019. The treatments were the different rates of both compost and NPS fertilizers laid out in randomized complete block design. Soil samples were taken before and after planting. Analytically determined soil physicochemical and agronomic data was subjected to analysis of variance using GLM procedures of the Statistical Analysis System Software (version 9.3). The results of the study showed that combined application of coffee husk compost and NPS fertilizers were improved soil moisture and total porosity over control, while, bulk density was decreased below the control. The alkalinity of applied compost caused increment of soil pH after treating the plots by coffee husk compost. Moreover, the application of coffee husk compost along with inorganic fertilizers increased the contents of organic matter, total nitrogen, available phosphorus, available sulfur, exchangeable basis and CEC. Combined application of coffee husk compost at (7.5 t ha ) and mineral 1 NPS fertilizer at (50 kg ha ) has better improved yield of coffee crop. The experimental yield of Manasibu 1 variety for present study from the station was 1.59 t ha . Therefore, based on the result of the study it can be 1 concluded that under condition of low soil pH of study area the availability of essential nutrients (e.g. P, N, K, Ca, Mg and Mo) are critically affected. This indicates that the strong acid pH values at Haru Research sub-center require more attention. Moreover, the low levels of CEC, organic carbon, total nitrogen and available P contents at study area soils confirm that soil fertility is among the constraints for sustainable coffee production in the Haru district. In response to this application of integrated NPS fertilizer and coffee husk compost with different rates improved soil physicochemical properties and coffee yield. Nevertheless, the potential coffee productivity in the area has not yet been exploited. Alleviating the soil fertility problems of the soils of study area through integrated application of local available coffee husk compost and blended NPS fertilizer could be one option. The study recommended that the use of 7.5 t ha coffee husk compost and 50 kg ha of NPS 1
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