杂交中粳亩产７５０公斤群体的形成及栽培技术刘超（江苏省徐淮地区徐州农科所２２１１２１）淮北地区为我国南北稻区的过渡地带，其待定的自然资源有利于中稻的生长发育。自杂交中粳在该地区投入生产应用以来，不少地方出现过亩产７５０公斤左右的高产田块，创本省及黄淮... Formation and Cultivation Techniques of 750 kg Population of Japonica Hybrid Rice Liu Chao (Xuzhou Agricultural Science Institute, Xuhuai, Jiangsu Province 221121) The northern part of Huaibei is the transition zone between the north and south rice areas in China. The natural resources to be determined are beneficial to the growth and development of midge rice. Since Japonica hybrid rice has been put into production and application in the region, many high-yield plots of about 750 kilograms per mu have appeared in many places, creating the province as well as Huanghuai Prefecture.