不同基蘖肥与穗肥比例对超级稻产量的影响

摘要

The effects of base tiller fertilizer and panicle fertilizer ratio on the yield and yield formation of super rice Tianyou 3618 was studied in the fields. The results showed that the yield of basic tiller fertilizer and panicle fertilizer ratio of 7∶3, 6∶4, 5∶5 treatment significantly higher, compared to ratio of 10∶0, 9∶1, 8∶2 treatment. The main reason for the yield increase was increase of effective panicle number, panicle rate, high harvest index and grain plumpness. Therefore, appropriate increase in panicle fertilizer application rate will increase rice yield.Considering the security of the medium-term fertilization, base tiller fertilizer and panicle fertilizer ratio 7∶3 was the suitable ratio for super rice Tianyou 3618.%以超级稻天优3618为材料，研究不同基蘖肥与穗肥比例对天优3618产量的影响。结果表明，基蘖肥、穗肥比例为7∶3、6∶4、5∶5的处理产量较高，比10∶0、9∶1、8∶2处理增产显著，增产的主要原因在于有效穗数增加、成穗率和收获指数高、籽粒饱满。因此，适当增加穗肥施用比例，有利于超级稻产量的增加，考虑到中期施肥安全性问题，7∶3是超级稻天优3618比较适宜基蘖肥与穗肥比例。