什么是“三夏”？一组数据带你了解

Core Viewpoint - The summer grain harvest, known as "San Xia," is underway in China, with significant implications for food supply and agricultural management [1][3]. Group 1: Summer Grain Harvest - The summer grain harvest, which includes winter wheat and winter rapeseed, is crucial for food security, as winter wheat is a key staple and rapeseed oil accounts for 40% of domestic edible oil production [1][3]. - The Yangtze River basin is the primary area for winter rapeseed, contributing approximately 85% of the national area and production [1]. Group 2: Regional Harvest Progress - The southwestern wheat region is the first to begin harvesting, followed by the Yangtze River middle and lower reaches, Huang-Huai-Hai region, and the northwest wheat region [3]. - The Huang-Huai-Hai region, which includes Henan, Shandong, Hebei, Jiangsu, and Anhui, accounts for over 70% of the national wheat area and nearly 80% of the production [3]. Group 3: Agricultural Management - As the summer harvest and planting occur, ongoing field management is essential for maximizing grain yield, emphasizing the importance of agricultural practices [5].