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【目的】对8个紫花苜蓿品种田间幼苗生长阶段进行分析研究。【方法】测定分析8个品种的物候期、生长速率、自然高度、地下和地上部分生长发育特性等。【结果】苜蓿幼苗生长阶段品种间生长速度及生物量的积累表现出不同生物学特征,但无明显差异;根系生物量的积累与地上部分生物量的积累呈正相关;其中,WL-323、三得利和青睐苜蓿品种适应性及综合表现最好,阿尔冈金品种幼苗生长阶段综合表现不佳。【结论】各苜蓿品种在第1年生长初期阶段生长发育规律和生物学特征表现基本相似,其生长速度及生物量积累主要受气温变化的影响。
【Objective】 The objective of this experiment was to analyze the growth stages of eight alfalfa cultivars in field. 【Method】 The phenophase, growth rate, natural height, growth and development characteristics of underground and aboveground parts of 8 cultivars were determined and analyzed. 【Result】 The results showed that the growth of alfalfa seedlings in different growth stages showed different biological characteristics, but no significant differences were found. The accumulation of root biomass was positively correlated with the accumulation of aboveground biomass. Among them, WL-323, Suntory And alfalfa varieties preferred the best overall performance and adaptability, Algonquin variety seedling growth stage comprehensive performance is poor. 【Conclusion】 The growth and development patterns and biological characteristics of all the alfalfa cultivars in the first year of growth were basically similar. The growth rate and biomass accumulation of alfalfa cultivars were mainly affected by the temperature changes.