Response of the Fate of In-Season Fertilizer Nitrogen to Plastic Mulching in Rainfed Maize Croplands of the Loess Plateau.
Plants (Basel)
; 11(18)2022 Sep 08.
Article
em En
| MEDLINE
| ID: mdl-36145744
ABSTRACT
As plastic mulching is widely used for maize production on Loess Plateau, study of the fate of fertilizer nitrogen (N) in rain-fed croplands is of great significance. Field experiments were conducted during 2015-2016 at a typical dry-land farm on the Loess Plateau, China. The stable isotope tracer technique was applied to analyze the effects of plastic mulching on the maize crop yield, N content in the grain, and mechanism of N uptake and utilization in maize plants with plastic mulch (PM) and without plastic mulch (CK) on the Loess Plateau. Maize yield, aboveground dry matter, grain N concentration, and N uptake in aboveground biomass for PM significantly increased, in addition to fertilizer nitrogen recovery and nitrogen production efficiency. Compared to CK, PM improved the total N uptake from the soil in the aboveground biomass by 16.39 and 27.75 kg ha-1 and fertilizer nitrogen recovery by 10.89 and 22.02 kg ha-1, respectively. Furthermore, PM increased in-season fertilizer N retention in the soil by 11.9-24.8 kg ha-1, and the uncountable fertilizer N decreased by approximately 33.8 kg ha-1 on average. In conclusion, PM simultaneously improved the maize yield and N utilization, which provides a scientific basis for nitrogen management in maize croplands.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Plants (Basel)
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
China