food, grain

糧 is composed of 米 (rice) and 量 (measure). 量 is formed from 日 (sun) and a variant of 東 (east), referring to observing the sun to estimate agricultural timing. Farming at the right time naturally leads to abundant yields. 米 represents cereal crops, which were the staple food of ancient people, so 糧 is used to denote grain or food provisions.