叶面喷肥对芹菜种子产量和质量的影响

以08-15 西芹为试验材料，用农用磷酸二氢钾和硼钙宝混合配制叶面肥，在芹菜花期不同
阶段进行喷施处理。结果表明：二级花序开花期间叶面喷肥不仅可以提高芹菜种子产量，而且还能够增加
种子千粒重，增强发芽能力，从而有效提高种子质量；而等到三级花序开花末期至四级花序开花初期再喷
施叶面肥，虽然可以使种子产量有所提高，但千粒重、发芽力等种子质量指标却变差。在上述两个时期连
续两次喷肥，增产和提高种子质量的效果更佳，但是值得注意的是，后一时期喷肥容易碰损花枝，田间操
作不便利，如果确实需要在此时期喷肥，最好将制种田行间距加宽。

Effects of Foliar Fertilizer on Yield and Quality of Celery Seed

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.