华北农学报2024，Vol.39Issue(1)：127-134,8.DOI:10.7668/hbnxb.20194022
磷肥施用方式对黄淮地区夏玉米土壤磷素有效性及产量的影响
Effect of Phosphorus Fertilizer Application Method on Soil Phosphorus Availability and Yield of Summer Maize in Huang-Huai Area
摘要
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,availa-ble 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 sur-face 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,respective-ly.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 phos-phorus 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 a-nalysis 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 a-vailable phosphorus content in P2 and P4 treatments were higher in this soil layer,which was conducive to the con-version of soil phosphorus into maize absorbable state.In conclusion,compared with the traditional application meth-od,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.关键词
玉米/磷肥/施用方式/产量/速效磷/根系/磷酸酶Key words
Corn/Phosphorus fertilizer/Application method/Yield/Available phosphorus/Root system/Phosphatase分类
农业科技引用本文复制引用
窦航宇,阮毅好,张颖蕾,宋苗苗,张义涵,杨留洋,杨青华,王浩..磷肥施用方式对黄淮地区夏玉米土壤磷素有效性及产量的影响[J].华北农学报,2024,39(1):127-134,8.基金项目
河南省自然科学基金项目(212300410157) （212300410157）
