山东秋粮已收5194万亩，其中玉米收获超八成

Core Insights - The article reports on the progress of autumn grain harvest in Shandong Province, with a total of 51.947 million acres harvested as of October 20, accounting for 78.8% of the total area [1] - Specifically, corn has been harvested on 47.876 million acres, representing 81.9% of the total corn area [1] - A total of 141,700 corn harvesters have been deployed, including 101,810 tracked harvesters, completing the mechanized harvesting of 37.822 million acres of corn [1]