人人都爱吃甜西瓜,那么怎样提高西瓜的甜度呢? 一、选择良种。选用和推广西瓜良种,这是西瓜高产优质的前提。近年来我国新育出的郑州3号、郑州F—1、郑州F—2等西瓜品种,都是适合北方种植的高产优质良种。二、合理安排种植时期。昼夜温差大, Everyone loves to eat sweet watermelon, so how to improve the sweetness of watermelon? First, choose a good seed. Selection and promotion of watermelon varieties, which is the premise of high yield and quality of watermelon. In recent years, China has newly raised Zhengzhou No. 3, Zhengzhou F-1, Zhengzhou F-2 and other watermelon varieties, are suitable for planting high yield and quality of the north. Second, reasonable arrangements for the planting period. Large temperature difference between day and night,