饲料草在不同水分条件下的生存分析

IF 0.6 4区 综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES Acta Scientiarum-technology Pub Date : 2022-12-19 DOI:10.4025/actascitechnol.v45i1.60820
L. R. R. Lucena, M. L. D. M. V. Leite, Álefe Chagas de Lima Costa, João Pedro Soares Caraciolo, J. R. Silva
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引用次数: 0

摘要

饲草植物具有多年生、抗旱、适应炎热气候、土壤多样性广等特点,被认为是家畜发展的主要因素之一。水分不足会导致它们的解剖、生理和生物化学发生变化,从而影响发育和生产力的各个阶段。因此,有必要对水分胁迫条件下饲料植物的寿命进行评价。使用的设计是一个因子方案,包括两种类型的草,五个水平的水替换,10个重复。试验期间,每天对禾草进行评价,以叶面积衰老超过70%的禾草为死株。在未灌溉的禾草中,蚊子尿藻的寿命为61 d,在25%和50%的田间灌溉条件下为131和195 d,在75%和100%的田间灌溉条件下,蚊子尿藻的寿命大于240 d。不灌溉条件下五子柳的寿命为54 d, 25%和50%的灌溉条件下的寿命为117 d和152 d, 75%和100%的灌溉条件下的寿命大于240 d。与未接受灌溉的植物相比,以25%和50%的田间容量灌溉,草的寿命分别增加了一倍和三倍。75%或更多农田容量的灌溉不促进草的死亡。
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Lifetime of forage grasses submitted to different water regimes using survival analysis
Forage plants are considered one of the main factors for livestock development, for they present perennial growth, resistance to drought, adaptation to hot climate regions, and wide soil diversity. The water deficit causes changes in their anatomy, physiology, and biochemistry, which can affect all stages of development and productivity. For these reasons, it is necessary to evaluate the lifetime of forage plants under water stress conditions. The design used was a factorial scheme, consisting of two types of grasses, and five levels of water replacement, with ten replications. During the experimental period, grasses were evaluated daily, with more than 70% of leaf area in senescence being considered a dead plant the one with more than 70% of leaf area in senescence. Urochloa mosambicensis lifetime was of 61 days for grasses that were not irrigated, 131 and 195 days for those that received 25% and 50% of field capacity, and greater than 240 days for those that were irrigated with 75 and 100% of field capacity. Digitaria pentzii lifetime was of 54 days for grasses that were not irrigated, 117 and 152 days for those that received 25 and 50% of field capacity, and greater than 240 days for those that were subjected to water regime 75 and 100% of field capacity. Irrigation with 25 and 50% of field capacity doubles and triplicates, respectively, the lifetime of grasses when compared to plants that did not receive irrigation. Irrigations with 75% or more of field capacity do not promote grass mortality.
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来源期刊
Acta Scientiarum-technology
Acta Scientiarum-technology 综合性期刊-综合性期刊
CiteScore
1.40
自引率
12.50%
发文量
60
审稿时长
6-12 weeks
期刊介绍: The journal publishes original articles in all areas of Technology, including: Engineerings, Physics, Chemistry, Mathematics, Statistics, Geosciences and Computation Sciences. To establish the public inscription of knowledge and its preservation; To publish results of research comprising ideas and new scientific suggestions; To publicize worldwide information and knowledge produced by the scientific community; To speech the process of scientific communication in Technology.
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