甘薯营养吸收与利用效率的研究不同施氮磷肥量下的品种

IF 1.5 Q2 AGRONOMY International Journal of Agronomy Pub Date : 2023-11-07 DOI:10.1155/2023/4231940
Miheret Hendebo Lemma, Ali Mohammed, Fekadu Gurmu, Hussien Mohammed Beshir
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引用次数: 0

摘要

红薯是非洲的主食和动物饲料,也是食品、饲料、制药、化妆品、化学和能源工业的原料来源。在低肥力土壤中添加氮和磷可提高红薯产量。本研究旨在评价施氮磷肥条件下橙肉甘薯品种的养分吸收和利用效率。试验在2019和2020两个生长季的田间雨养条件下进行。试验选用5个橙肉甘薯品种(Kulfo、Kabode、Alamura、Dilla和NASPOT-12), 3个氮肥水平(0、23和46 kg·N·ha -1)和2个磷水平(0和46 kg P2O5·ha -1),采用α-晶格设计,5 × 3 × 2设计,3个重复。品种与氮肥、磷肥的互作效应影响甘薯的养分吸收、生理效率和农艺效率。在各氮磷水平下,NASPOT-12的养分吸收较好,但表观恢复较差,在23 kg N·ha−1和46 kg P2O5·ha−1处理下,NASPOT-12的养分吸收、农艺效率和生理效率最高。综上所述,施用23 kg·N·ha -1和46 kg P2O5·ha -1的NASPOT-12具有较高的养分吸收、农艺和生理效率。
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Nutrient Uptake and Efficiencies of Orange-Fleshed Sweet Potato (Ipomoea batatas L.) Varieties under Different Rates of Nitrogen and Phosphorus Fertilizers
Sweet potatoes serve as a staple food and animal feed in Africa and serve as a source of raw materials for the food, feed, pharmaceutical, cosmetic, chemical, and energy industries. The yield of orange-fleshed sweet potatoes is increased when nitrogen (N) and phosphorus (P) are added to low-fertility soils. The objective of this study was to evaluate the nutrient uptake and use efficiency of orange-fleshed sweet potato varieties under applied N and P. The experiment was conducted for two growing seasons (2019 and 2020) under rain-fed conditions in the field. The study included five orange-fleshed sweet potato varieties (Kulfo, Kabode, Alamura, Dilla, and NASPOT-12), three N levels (0, 23, and 46 kg·N·ha−1), and two levels of P (0 and 46 kg P2O5·ha−1) fertilizers designed in 5 × 3 × 2 with α-lattice design in factorial arrangement using 3 replications. The interaction effect of variety, N, and P fertilizers affected nutrient uptake, physiological efficiency, and agronomic efficiency of sweet potatoes. NASPOT-12 was the better variety in nutrient uptake but poor in apparent recovery at all levels of N and P. The highest nutrient uptake, agronomic efficiency, and physiological efficiency were observed on NASPOT-12 when subjected to 23 kg N·ha−1 and 46 kg P2O5·ha−1. Overall, NASPOT-12 with 23 kg·N·ha−1 and 46 kg P2O5·ha−1 could be recommended for its high nutrient uptake, agronomic, and physiological efficiencies.
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来源期刊
CiteScore
3.60
自引率
5.30%
发文量
66
审稿时长
16 weeks
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