Increased photosynthesis and grain yields in maize grown with less irrigation water combined with density adjustment in semiarid regions.

ABSTRACT: In order to design a water-saving and high-yield maize planting model suitable for semiarid areas, we conducted trials by combining supplementary irrigation with different planting densities. Three planting densities (L: 52,500, M: 75,000, and H: 97,500 plants ha^-1) and four supplementary irrigation modes (NI: no irrigation; IV: 375 m³ ha^-1 during the 11-leaf stage; IS: 375 m³ ha^-1 in the silking stage; and IVS: 375 m³ ha^-1 during both stages) were tested. The irrigation treatments significantly increased the leaf relative water content, but the high planting density significantly decreased the relative water content during the silking and filling stages. After supplementary irrigation during the 11-leaf stage, IV

SUBMITTER: Liu D 

PROVIDER: S-EPMC7546219 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature