中文摘要：

研究了不同施肥处理（N、P、K）对阿尔冈金、WL232HQ、敖汉苜蓿根系体积、根系生物量的影响。试验结果表明：从14个施肥处理可以看出，WL232HQ在分枝期和初花期内根系体积（27mL、10mL）均明显高于阿尔冈金和敖汉苜蓿，而阿尔冈金在分枝期和初花期的最大根系生物量（18．0g、13．7g）略高于WL232HQ，明显高于敖汉苜蓿。

英文摘要：

The bulk and biomass of Algonquin, WL232HQ and Aohan＇s root system were studied under different fertilizing treatments. The results showed that the bulk of WL232HQ＇s root system was higher than that of others in branching period and blooming period. However, the biomass of Algonquin＇s root system was the hightest in branching period and blooming period in 14 fertilizing treatments.