Ecological assessment of grass associations in the Balkan Mountains conditions

IF 1.4 4区 农林科学 Q3 AGRONOMY
N. Georgieva, V. Kosev, G. Naydenova, D. Mitev
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引用次数: 4

Abstract

ABSTRACT Creation of plant associations with maximum stability of yields in the regional ecological conditions for which they have been designed is key in modern agriculture. The present study aimed to investigate the impact of the environment on productivity and stability of six grass associations (red fescue, pure stand; red fescue and birdsfoot trefoil; red fescue, tall fescue and birdsfoot trefoil; red fescue and Kentucky bluegrass; red fescue, Kentucky bluegrass and alfalfa; red fescue, Kentucky bluegrass and birdsfoot trefoil) in four locations (mountain slope with eastern, western, northern and south-eastern facing direction). Methods of dispersion, regression and nonparametric analysis were used to evaluate the stability of the mixtures. According to the productivity during the 13-year study period and the calculated stability parameters, the triple mixture of red fescue, Kentucky bluegrass and alfalfa was the highest yielding mixture, but this mixture also manifested itself as unstable. The lower yielding mixed sward of red fescue and Kentucky bluegrass and the pure stand of red fescue were also distinguished by low adaptive ability. In the conditions of the Middle Balkan Mountains, the mixture of red fescue, tall fescue and birdsfoot trefoil was characterised to have the most favourable combination of productivity and ecological stability, and was considered suitable for growing in a wide range of environmental conditions. As a whole, the swards on the mountain slopes with eastern and south-eastern exposure were more productive but had low stability compared to those grown on western and northern exposure.
巴尔干山区草地群落的生态评估
摘要:在设计的区域生态条件下,建立具有最大产量稳定性的植物群落是现代农业的关键。本研究旨在调查环境对四个地点六个草类协会(红羊茅、纯林;红羊茅和鸟足三叶草;红羊羊茅、高羊茅和鸡足三叶草、红羊茅与肯塔基蓝草;红茅、肯塔基蓝草和苜蓿;红羊毛、肯塔基蓝草和鸟足三叶草)生产力和稳定性的影响(面向东、西、北、东南的山坡)。采用离散、回归和非参数分析方法对混合物的稳定性进行了评价。根据13年研究期间的生产力和计算的稳定性参数,红羊茅、肯塔基蓝草和苜蓿的三重混合物是产量最高的混合物,但这种混合物也表现为不稳定。产量较低的红羊茅与早熟禾混合草地和纯红羊茅林分的适应性也较低。在中巴尔干山脉的条件下,红羊茅、高羊茅和鸟足三叶草的混合物具有最有利的生产力和生态稳定性组合,被认为适合在各种环境条件下生长。总体而言,与西部和北部裸露的山坡相比,东部和东南部裸露的山坡上的草地生产力更高,但稳定性较低。
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来源期刊
Biological Agriculture & Horticulture
Biological Agriculture & Horticulture 农林科学-农艺学
CiteScore
3.30
自引率
6.70%
发文量
18
审稿时长
>36 weeks
期刊介绍: Biological Agriculture & Horticulture aims to act as the central focus for a wide range of studies into alternative systems of husbandry, and particularly the biological or organic approach to food production. The Journal publishes work of a sound scientific or economic nature related to any aspect of biological husbandry in agriculture, horticulture and forestry in both temperate and tropical conditions, including energy and water utilization, and environmental impact.
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