Acta Agriculturae Boreali-Sinica ›› 2024, Vol. 39 ›› Issue (1): 127-134. doi: 10.7668/hbnxb.20194022

Special Issue: Corn Soil fertilizer Hot Article

• Resources & Environment·Plant Protection • Previous Articles     Next Articles

Effect of Phosphorus Fertilizer Application Method on Soil Phosphorus Availability and Yield of Summer Maize in Huang-Huai Area

DOU Hangyu, RUAN Yihao, ZHANG Yinglei, SONG Miaomiao, ZHANG Yihan, YANG Liuyang, YANG Qinghua, WANG Hao   

  1. College of Agronomy,Henan Agricultural University,State Key Laboratory of Wheat and Maize Crop Science,Collaborative Innovation Center of Henan Grain Crops,Zhengzhou 450002,China
  • Received:2023-11-13 Published:2024-03-03

Abstract:

In order to explore the suitable phosphate fertilizer application methods in the Huang-Huai area,this research conducted field experiments to investigate the dry matter accumulation,root morphological indexes,available phosphorus content and phosphatase activity in different soil layers,maize yield and its component factors of four phosphate fertilizer application methods(conventional broadcast (P1),layered application (P2),strip application (P3) and hole application (P4)).The results showed that the ear length and kernel row number of P2 and P4 were significantly increased by 22.57%,16.81% and 15.19%,7.60% compared with P1.The grain number per spike of P2,P3 and P4 were significantly increased by 25.26%,13.86% and 17.00% compared with P1,respectively.Additionally,a decrease of spikes per area was found in P2 (15.30%) compared with P1.The yields of P2 and P4 were significantly increased by 15.20% and 10.79% compared with P1.Among root traits,the root length,root surface area,root volume and root tip number were significantly affected by the phosphorus application method.The root length under P2 and P4 treatments was significantly increased by 30.41% and 33.75% compared with P1.The root surface area of P2 treatment was significantly increased by 23.77% compared with P1.The root surface area of P4 treatment was significantly increased by 29.60% and 21.70% compared with P1 and P3 treatments,respectively.The root volume and root tip number of P2 and P4 treatments were significantly higher than those of P1 and P3.The analysis of soil available phosphorus content showed that the available phosphorus contents of P2 and P4 were significantly higher than that of P1 in the soil layer of 10—20 cm at three-leaf stage of maize.The available phosphorus contents of P2,P3 and P4 in the 0—20 cm soil layer were lower than that of P1,and the available phosphorus content of P4 in the soil layer of 20—30 cm was significantly lower than that of P1 at maturity stage.Correlation analysis showed that there was a significant positive correlation between acid phosphatase activity and soil available phosphorus content in the 10—20 cm soil layer at three-leaf stage of maize.The acid phosphatase activity and soil available phosphorus content in P2 and P4 treatments were higher in this soil layer,which was conducive to the conversion of soil phosphorus into maize absorbable state.In conclusion,compared with the traditional application method,layered phosphorus application and cave phosphorus application can improve the soil phosphorus availability in the early stage of maize,promote the growth and development of roots,and then increase the summer maize yield,so they are more suitable application method for corn phosphorus fertilizer in Huang-Huai area.

Key words: Corn, Phosphorus fertilizer, Application method, Yield, Available phosphorus, Root system, Phosphatase

Cite this article

DOU Hangyu, RUAN Yihao, ZHANG Yinglei, SONG Miaomiao, ZHANG Yihan, YANG Liuyang, YANG Qinghua, WANG Hao. Effect of Phosphorus Fertilizer Application Method on Soil Phosphorus Availability and Yield of Summer Maize in Huang-Huai Area[J]. Acta Agriculturae Boreali-Sinica, 2024, 39(1): 127-134. doi: 10.7668/hbnxb.20194022.

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