关键词: 小麦, 磷肥, 生长, 产量, 分层施肥

Abstract: In order to study the effects of placing phosphorus fertilizer in different soil layers on winter wheat growth and yield with PVC tubes in a field, this study designed six treatments of blank control, single N at 0~20 cm depth, single P at 0~20 cm depth, subsurface manuring N and P at 0~20 cm depth, manuring P by layers at 0~20 cm,20~40 cm and 40~50 cm, and deep placing P at 40~50 cm in soil. The results showed the treatment of manuring phosphorus fertilizer by layers at 0~20 cm,20~40 cm and 40~50 cm depth in soil improved winter wheat growth, increased weights of aboveground parts and roots, improved root ratios in deeper soil layers. Compared with deep placing phosphorus at 40~50 cm, subsurface manuring and single phosphorus treatment, wheat yield of manuring phosphorus fertilizer by layers at 0~50 cm depth in soil increased 7.46%, 16.16% and 75.81%, respectively, and P agronomic efficiency (PAE) increased 156.2%,43.71% and 297.11%, respectively. Therefore, manuring phosphorus fertilizer by layers at 0~50 cm depth in soil improved winter wheat growth, yield and phosphorus efficiency.

Key words: wheat, phosphorus, growth, yield, manuring layers