绿洲区不同苜蓿品种田间幼苗生长阶段特征分析

Analysis of the Growth Characteristic of Seedlings of Different Alfalfa Varieties in Xinjiang Oasis

【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 growth of eight varieties of alfalfa seedling was researched in a farm. [ Method] To determine and analyze the samples of their phenophase, growth rate, natural height, overground and underground growth characteristics. [ Result ] It shows different biological characteristics on the growth speed and the accumulation of biomass of several varieties of alfalfa seedlings during the growth period, but the difference isn＇t significant. The accumulation of root biomass and the accumulation of overground biomass show positive correlation. The adaptation and comprehensive performance of WL - 323, Sanditi and Qinglai are the best ones. The Algonquin seedlings perform overall badly during their growth. [ Conclusion] It indicated that the growth rules and the biological characteristics of the eight varieties of alfalfa are similar in the initial stage in the first year. The growth speed and accumulation of biomass are mainly affected by the climate variation.