半干旱地区向日葵品种在施钾条件下的营养效率

IF 0.6 4区农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY

Bioscience Journal Pub Date : 2023-03-10 DOI:10.14393/bj-v39n0a2023-54188

G. L. Santos, A. P. D. Santos, M. G. D. Santos, H. Lins, A. R. E. D. Souza, F. D. L. Tartaglia, Lindomar Maria da Silveira, A. P. B. Júnior

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引用次数: 0

摘要

钾参与向日葵栽培过程中的渗透调节和光合作用转运等关键过程。然而，由于气候因素或品种之间的差异，这种营养物质的吸收或积累发生不同。本研究的目的是评价在半干旱区不同钾用量对向日葵品种营养效率的影响。为此，在2016年和2017年进行了两次实验。处理包括0、30、60、90和120 kg ha-1 K2O 5个剂量和4个向日葵品种aguar 6、Altis 99、Multissol和BRS 122。试验设计为随机区组，设4个重复和细分区。评价的性状包括农艺效率、生理效率、恢复效率、利用效率和植株全钾积累。向日葵品种对两种作物的钾用量有响应，但效率参数有所不同。作物2的营养效率高于作物1。aguarar6的营养效率高于其他两种作物。K2O用量在75 ~ 91 kg hm -1时，各品种对钾的利用效率较高。

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Nutritional efficiency in sunflower cultivars under dosages of potassium in semiarid region

Potassium (K) participates in critical processes in sunflower cultivation, such as osmotic regulation and translocation of photosynthesis. However, the absorption or accumulation of this nutrient occurs differently owing to edaphoclimatic factors or between cultivars. The objective of this study was to evaluate the nutritional efficiency of sunflower cultivars as a function of different dosage K dosages in a semiarid region. To this end, two experiments were conducted in 2016 and 2017. The treatments consisted of five dosages of K at 0, 30, 60, 90, and 120 kg ha-1 K2O and four sunflower cultivars, Aguará 6, Altis 99, Multissol, and BRS 122. The experimental design was a randomized block with four replications and subdivided plots. The characteristics evaluated were agronomic efficiency, physiological efficiency, recovery efficiency, utilization efficiency, and accumulation of total K in the plant. Sunflower cultivars responded to K dosages in the two crops, with variations in efficiency parameters. Crop 2 showed better nutritional efficiency compared to crop 1. Aguará 6 showed greater nutritional efficiency than the other two crops. The use of dosages between 75 and 91 kg ha-1 of K2O provided better efficiency in K usage for the cultivars.

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来源期刊

Bioscience Journal Agricultural and Biological Sciences-General Agricultural and Biological Sciences

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

48 weeks

期刊介绍： The Bioscience Journal is an interdisciplinary electronic journal that publishes scientific articles in the areas of Agricultural Sciences, Biological Sciences and Health Sciences. Its mission is to disseminate new knowledge while contributing to the development of science in the country and in the world. The journal is published in a continuous flow, in English. The opinions and concepts expressed in the published articles are the sole responsibility of their authors.