期刊
INDUSTRIAL CROPS AND PRODUCTS
卷 80, 期 -, 页码 17-25出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.indcrop.2015.10.053
关键词
Lodging stability; Seeding rate; Flax fibre; Mechanical properties; Fibre yield; Composite; Plant organization
资金
- ADEME
Cultivation of flax fibres (Linum usitatissimun) for composite reinforcement must provide fibres with good mechanical properties, but also a high fibre yield and lodging stability in order to ensure a stable and satisfactory income for the farmer. This work proposes a study of the impact of the seeding rate on these key parameters. We studied the Aramis variety with 4 different seeding rates (1200, 1500, 1800 and 2500 seeds/m(2)). The results indicate the significant impact of the seeding rate on the stem's morphological parameters; its increase induces a progressive decrease of the scutched fibre length and of the stem diameter. At the same time, the higher seeding rates obtained improved the scutched fibre's yield (+11% between 1200 and 2500 seeds/m(2)) but, conversely, induced a drop in the elementary fibre's tensile properties and in the flax stem's lodging stability, mainly due to the large decrease in the stem's diameter. This work shows that a compromise must be found to optimize the fibre yield, the mechanical performance and the plant's stability; it underlines the relevance of using a conventional seeding rate, close to 1800 seeds/m(2). (C) 2015 Elsevier B.V. All rights reserved.
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