Development course of Shandong Denghai Seed Industry Co., Ltd.

During the period of 1985, researcher Li Denghai led the establishment of the first private seed enterprise for corn industrialization in China and became a pilot unit for the integration of breeding, reproduction and marketing in the Ministry of Agriculture. The company has been committed to the research of maize breeding and high-yield cultivation for a long time, taking the lead in developing compact maize breeding in China, starting the innovative cause of maize breeding in China with the breeding speed of three to four generations a year, and summarizing the maize breeding theory of "compact plant type+high combining ability". More than 0/00 compact maize hybrids/kloc-have been bred, of which 43 have passed the examination and approval, and 7 invention patents and 38 new plant variety rights have been obtained. In order to ensure the breeding work to a higher level, 32 breeding centers and experimental stations have been established all over the country, and the largest maize breeding research platform in China has been built, with 2 16 researchers, 9 of whom enjoy special allowance from the State Council. The company has cooperated extensively with domestic universities to carry out high-tech breeding research such as transgenic, molecular marker, haploid induction, cell engineering, radiation and aerospace, and achieved outstanding results. In the past 36 years, continuous research on high-yield cultivation of maize has created a road of high-yield maize in China. Created and refreshed the high-yield record of summer maize in China for seven times in a row; 1972, corn broke through the Qianjin Pass for the first time; 1979, the inbred line Yedan 2 broke the high-yield record of flat corn for the first time, creating a high-yield record of 776.9 kg/mu of summer corn in China; 1980 The domestic record of high yield of spring maize was 903.6 kg/mu. 1989, the world high-yield record of summer corn was refreshed to 1096.29 kg/mu, and in 2005, the world high-yield record of summer corn was raised to 1402.86 kg/mu again, which was four times of the national average corn yield (352.49 kg/mu) in that year.