使用不同质量浓度外源植物生长调节剂喷施于初花期藜麦植株，结果表现为质量浓度为24 mg/L、36 mg/L的ABA溶液能有效的降低藜麦株高。不同质量浓度的IAA、GA溶液对藜麦植株没有显著的矮化作用，但于生殖生长期喷施对藜麦灌浆前、中期植株株高生长的上扬趋势有一定抑制作用，使上扬趋势变为平缓增高，可辅助促进植株同化营养向藜麦生殖生长分配，从而提高藜麦籽实品质和产量。

Using the different concentrations of exogenous hormones spraying quinoa plant in the early flowering stage， the results show that the ABA solution with mass concentration of 24 mg/L and 36 mg/L can effectively reduce the plant height of quinoa. The IAA and Ga solutions of different mass concentrations had no significant dwarfing effect on quinoa plants， but the spraying on the reproductive growth period had a certain inhibitory effect on the upward trend of the high growth of the plants before and during the grain filling， making the upward trend to a gentle increase， which could assist in promoting the distribution of the plant assimilation nutrition to the reproductive growth of the quinoa，so as to improve the seed quality of quinoa， and increase the production.

S512.9

国家自然科学基金(31660357)、甘肃省农业科学院青年基金资助项目(2015GAAS31)。