Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Effect of different Si rates and application time on winter wheat grain protein in (a) Field E1 in 2016, (b) Field M2 in 2016, and (c) Field A3 in 2017. Treatments are designated in the format x:y, in which x and y are the fertilizer Si rates in kg Si ha−1 applied at planting and at tillering, respectively. Bars within the same year followed by the same letter are not significantly different (p > 0.1) based on a Duncan’s multiple range test.
