Partial-film mulch returns the same gains in yield and water use efficiency as full-film mulch with reduced cost and lower pollution: a meta-analysis.
J Sci Food Agric
; 101(14): 5956-5962, 2021 Nov.
Article
em En
| MEDLINE
| ID: mdl-33838057
ABSTRACT
BACKGROUND:
Plastic film mulch is widely used to improve crop yield and water use efficiency (WUE, yield per unit evapotranspiration) in semi-arid regions. It is commonly applied as partial-film mulch (PM at least 50% soil cover) or full-film mulch (FM complete soil cover). The PM has lower economic and environmental cost; hence it would be a superior technology provided it delivers similar gains in yield and WUE in relation to FM.RESULTS:
To solve contradictory results from individual studies, we compared FM and PM in a meta-analysis of 100 studies with 1881 comparisons (685 for wheat; 1196 for maize). Compared with bare ground, FM and PM both increased yield of wheat (20-26%) and maize (37-52%), and WUE of wheat (16-20%) and maize (38-48%), with statistically undistinguishable differences between PM and FM. The increases in crop yield and WUE were stronger at elevation > 1000 m, with annual precipitation<400 mm, and on loess soil, especially for maize.CONCLUSIONS:
We concluded that partial-film mulch could replace full-film mulch to return similar yield and WUE improvement, with reduced cost and environmental pollution. © 2021 Society of Chemical Industry.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Plásticos
/
Triticum
/
Água
/
Zea mays
/
Agricultura
Tipo de estudo:
Health_economic_evaluation
/
Systematic_reviews
Idioma:
En
Revista:
J Sci Food Agric
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
China