选用不同基因型的亚麻材料，对其根系体积和干重的动态增长规律进行了研究，结果表明：亚麻根系体积和干重的增长符合Logistic生长方程，根体积的渐增期为28.7～37.4 d，快增期为32.1～36.7 d，缓增期为27.8～40.3 d，根体积增长与快增期、缓增期增长速率呈显著正相关，与平均增长速率、渐增期增长速率、快增期增长速率呈极显著正相关，与增长期呈正相关但不显著。干重的渐增期为33.5～40.00 d，快增期为4.09～8.19 d，缓增期为23.4～38.50 d。根干重增长量与平均增长速率，最大增长速率，渐增期长短，渐增期增长速率，快增期增长速率，缓增期增长速率等性状呈极显著正相关。%To select different genotypes of flax material , the root volume and dry weight of the dy-namic growth were studied.The results showed that the root volume and dry weight were in line with the Logistic growth equation.The growing period for the root volume was 28.7 d~37.4 d , the fast growing period was 32.1 d ~36.7d, the easing period was 27.8 d ~40.3 d.There was a significant positive correlation between the root volume growth and the growth rates of the fast growing period and the easing period, was a highly significant positive correlation with the average growth rate , the easing growth rate and the fast growth rate , and was a positive correlation with the growth rate but not significantly.The growing period of dry weight was 33.5 d ~40.00 d, the fast growing period was 4.09 d ~8.19 d, the easing growth period was 23.4 d ~38.50 d.There was a highly significant positive correlation between the dry weight growth rate and the average growth rate , the maximum growth rate , the time of growing pe-riod, the fast growth rate and the easing growth rate.
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