Impact of Nitrification Inhibitors on Vegetable Production Yield, Nitrogen Fertilizer Use Efficiency and Nitrous Oxide Emission Reduction in China : Meta Analysis

Due to the long-term excessive fertilization in the vegetable system in China, nitrogen use efficiency (NUE) is low, and the environmental problem is serious. Nitrogen fertilizer combined with nitrification inhibitor is an effective strategy to alleviate the loss of active nitrogen and increase vegetable yield. However, systematic research on the above is lacking. Meta-analysis was used to systematically analyze the effects of nitrogen fertilizer combined with nitrification inhibitors[dicyandiamide (DCD), 3,4-dimethylpyrazole phosphate (DMPP), and 2-chloro-6-(trichloromethyl)pyridine (NP)] on the yield, plant nitrogen uptake, nitrogen fertilizer use efficiency, and nitrous oxide emission reduction effects in vegetable production in China. This study further revealed the impacts of different field management measures on their effects. The results showed that the combination of nitrogen fertilizer and nitrification inhibitor could significantly increase vegetable yield (9.2%), plant nitrogen uptake (10.4%), and nitrogen fertilizer use efficiency (11.2%) but reduce nitrous oxide emissions (28.4%). Among the different types of nitrification inhibitors, NP had the highest impact on the yield-increasing effect and the nitrous oxide emission reduction effect, which were 16.1% and 32.0%, respectively, followed by that of DMPP and DCD. Nitrification inhibitors could significantly increase vegetable yield (6.7%-14.7%) and reduce N2O emissions (14.6%-36.8%) in different nitrogen fertilizer rates. In neutral and alkaline vegetable soil, the yield-increasing effect and the reduction effect of nitrous oxide were higher than those in acidic soil. Nitrification inhibitors had significant effects on yield increase and nitrous oxide reduction under the conditions of greenhouse or open-field cultivation, root vegetables, and leafy vegetables. Principal component analysis (PCA) showed that soil total nitrogen content and soil pH were the main factors that promoted the increase in vegetable yields and drove nitrous oxide emissions under the application of nitrification inhibitors. In summary, nitrification inhibitors were an important measure to achieve the goal of improving quality and fertilizer use efficiency, while saving fertilizer and reducing emissions in vegetable production. Farmers should choose suitable types of nitrification inhibitors according to soil and field management measures to maximize their effectiveness.

Medienart:	E-Artikel

Erscheinungsjahr:	2022
Erschienen:	2022

Enthalten in:	Zur Gesamtaufnahme - volume:43
Enthalten in:	Huan jing ke xue= Huanjing kexue - 43(2022), 11 vom: 08. Nov., Seite 5140-5148

Sprache:	Chinesisch

Beteiligte Personen:	Liu, Fa-Bo [VerfasserIn] Ma, Xiao [VerfasserIn] Zhang, Fen [VerfasserIn] Liang, Tao [VerfasserIn] Li, Liang-Wu [VerfasserIn] Wang, Jun-Jie [VerfasserIn] Chen, Xin-Ping [VerfasserIn] Wang, Xiao-Zhong [VerfasserIn]

Links:	Volltext

Themen:	54-77-3 Dicyandiamido Dimethylphenylpiperazinium Iodide English Abstract Fertilizers Field management Journal Article K50XQU1029 M9B1R0C16H Meta-Analysis N762921K75 Nitrification inhibitor Nitrogen Nitrogen use efficiency Nitrous Oxide Nitrous oxide emission Soil Vegetables Yield

Anmerkungen:	Date Completed 29.11.2022 Date Revised 29.11.2022 published: Print Citation Status MEDLINE

doi:	10.13227/j.hjkx.202112046

funding:
Förderinstitution / Projekttitel:

PPN (Katalog-ID):	NLM349499918