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1 亚麻三圃提纯复壮技术优良品种在推广应用过程中,如不注意防杂保纯工作,就会由纯变杂,由优变劣,良种的增产作用会逐年下降,甚至完全消失,这种现象称为品种的混杂退化。造成品种混杂退化的原因主要有五方面,即机械混杂、生物学混杂、品种自身的变化和环境条件的影响、选种中的人为作用及使用非种子田的种子用于生产。针对这五种原因,最有效的解决办法是采取提纯复壮。亚麻提纯复壮的基本方法是三圃提纯技术。所谓三圃即单株培育选择圃,株行鉴定圃,混系高倍繁殖圃。1.1 单株培育选择圃常以原种为材料,也可以结合原原种高倍繁殖同时进行。主要是选拔本品种典型优良单株。通常在开花期
1 Flax three nursery Purification and Rejuvenation Fine varieties in the promotion and application of the process, if not pay attention to anti-hybrid pure work, it will be pure change miscellaneous, bad by the superior, improved seed production will decline year by year, or even disappear completely, this Phenomenon is called hybrid degeneration of breed. There are mainly five reasons for the mixed degradation of varieties, namely, mechanical hybridization, mixed biology, the changes of varieties themselves and environmental conditions, the artificial effects of seed selection and the use of seeds of non-seed fields for production. For these five reasons, the most effective solution is to take purification and rejuvenation. The basic method of purifying and rejuvenating linen is to purify it. The so-called three nursery that nursery selection nursery, nursery identified nursery, mixed high-multiplication nursery. 1.1 Selection of nursery plant nursery often used as the original material, but also can be combined with the original breeding of high multiplication at the same time. The main selection is the typical fine varieties of this plant. Usually at flowering