|Table of Contents|

Effects of Biochar Root-staining and Nitrogen Fertilizer on Soil Nitrogen Supply and Utilization Rate

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2025年9
Page:
104-114
Research Field:
Publishing date:

Info

Title:
Effects of Biochar Root-staining and Nitrogen Fertilizer on Soil Nitrogen Supply and Utilization Rate
Author(s):
GONG ChenchenHAN GuojunGUO YuanshangZANG LongfeiHOU Guowen
(College of Resources and Environment,Gansu Agricultural University,Lanzhou,Gansu 370070)
Keywords:
biocharstable production efficiencyeffective nitrogen contentnitrogen use efficiencypepper
PACS:
S 641.3
DOI:
10.11937/bfyy.20244076
Abstract:
Taking dried red pepper as test material,the effects of different biochar root nitrogen reduction treatments on soil nitrogen supply,soil enzyme,pepper biomass,yield and nitrogen use efficiency were studied by field experiment,in order to provide reference for the formulation of scientific application strategy of nitrogen fertilizer and biochar in Jiuquan area.The results showed that compared with CF treatment,the increase of soil nitrogen supply in F1B treatment was the highest.The contents of total nitrogen,nitrate nitrogen and ammonium nitrogen in soil increased by 9.30%,15.81% and 12.25%,respectively.The content of organic carbon increased by 10.23%,and the pH decreased by 0.40%.The effect of biochar and nitrogen reduction fertilization on soil enzyme activity was significant,which decreased with the increase of nitrogen reduction ratio,but the contents of urease and protease in F1B treatment increased by 10.13% and 3.88% compared with CF treatment.With the increase of nitrogen reduction ratio,the biomass and yield of pepper decreased significantly.Compared with conventional fertilization,the yield of pepper could be increased by 2.63% by reducing nitrogen by 10% and using biochar root treatment,while the yield of F2B,F3B and F4B treatments decreased by 2.91%-10.56%.The partial factor productivity of nitrogen fertilizer increased by 2.46-5.21 kg·kg-1,and the nitrogen use efficiency and nitrogen agronomic efficiency of F1B treatment were the highest,which were 35.85% and 5.48 kg·kg-1,respectively.It can be seen that the effect of biochar root staining combined with 10% nitrogen reduction fertilization was the best,which can ensure the nitrogen supply during the growth period of pepper,avoid a large amount of nitrogen waste,and achieve the purpose of stable yield of pepper and efficient utilization of nitrogen fertilizer.

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Last Update: 2025-05-16