Abstract: The factoral analysis shows that among three wheat varieties fested,the difference of the alate rate of M.granarium adults is not significant,and under two N application levels,the alate rate of M.granarium and S.graminum adults also hasn't any significant difference.JHanalogs with a concentration of 0.5% or 0.25% can produce a remarkable effect on the alate rate of M.granarium adults.The alate rate of M.granarium adults is closely related to the contents of leucine,tyrosine,phenylpropionic acid,lysine,proline,γ aminobutyric acid,amide nitrogen and water soluble proteins in wheat plant,while that of S.graminum adults is closely correlated to the content of crystine.

Key words: Schizaphis graminum, Macrosiphum granarium, Alate rate of adult aphid, drip irrigation amount, winter wheat, quality, grain filling properties, yield