西瓜是非洲热带地方原产的一年生蔓草。早在4,000年前,已在埃及栽培。相传当时以采种栽培为目的。約在12世紀的初期,始自西域传入我国。过去各国所产西瓜,每瓜內均含有很多种子,不仅人們吃瓜颇感不便;而且多生种子,徒耗养分。1942年在日本发明了无子西瓜,就是三倍体西瓜,既使生食,味又佳美, Watermelon is a native of the tropics in Africa, a year-long romance. As early as 4,000 years ago, it has been cultivated in Egypt. According to legend, the purpose of planting cultivation. About the beginning of the 12th century, it began to spread from the Western Regions to our country. In the past, watermelon produced in various countries contained a lot of seeds in each melon, which not only caused inconvenience for people to eat melon but also used more nutrients and nutrients. In 1942 invented in Japan without watermelon, is the triploid watermelon, even raw food, delicious and beautiful,