从1958年起,通过使用国内外大量原始材料、中国品种混杂群体等约3,000份材料,进行测交和核置换回交。核置换是采用边引变、边自交、边杂交、边早代测交、边回交置换。早代测交和稳定后测交配合力相结合。同时改革育种程序,加快选育速度,提高效率1—2倍。培育出一些中国种和混血种的各类型不育系。用它配制的杂交高粱,全国应用面积已达一千万亩左右。 From 1958 onwards, about 3,000 pieces of materials, including a large amount of raw materials both at home and abroad, and mixed varieties of Chinese varieties, were used for the test and nuclear replacement. Nuclear substitution is the use of edge change, while self-hybrid, hybridization, while the early detection dating, while the back exchange. Early dating and stability test combined with the combined test. At the same time, we should reform the breeding program, speed up selection and raise the efficiency by 1-2 times. Bred a variety of Chinese species and hybrids of all types of male sterile lines. With its preparation of hybrid sorghum, the national application area has reached 10 million mu.