Abstract：This experiment used foliar fertilizer mixed with potassium dihydrogen phosphate and
Penggaibao as compound fertilizer and sprayed it at different celery flowering stages taking‘ 08-15’
celery（Apium graveolens L.） cultivar as material．The results showed that foliar spraying during the
secondary inflorescence flowering stage could not only increase celery seed yield，but also improve
1000-grain weight and enhance germination ability，thus to effectively improve seed quality．The
effects of spraying foliar fertilizer at the end of the third inflorescence flowering stage to the early fourth
inflorescence flowering stage would make the 1000-grain weight and germination capacity，etc．quality
indexes become worse，although the seed yield was increased．Twice successive spraying at the above
mentioned stages would have better effect in increasing yield and improving seed quality，but one thing
worthwhile to notice is the later spraying could easily damage the flower branch，and field operation is
very inconvenient．If spraying at this time is really needed，the row spacing in seed producing field
should be large enough.
