There is a way to improve the quality of feed corn (8.18)

According to the farmer's daily, corn is an important food and feed crop in China 78% of the total corn demand in China is used as livestock feed It is estimated that feed corn will account for more than 89.5% by 2020 As the main high-energy feed, the nutritional value of common corn is not complete The endosperm is not only low in protein content, but also poor in quality and amino acid imbalance The lysine content of common corn grain is only 0.23%, while that of livestock and poultry is usually 0.6% - 0.8% The insufficient part should be supplemented by adding more lysine, soybean cake and fish meal The feed industry in China needs to add more lysine, soybean cake and fish meal every year 30000 tons of synthetic lysine is offered as additive However, the content of lysine and tryptophan in high quality protein corn grain is about 80% higher than that of common corn The preliminary study shows that this kind of corn can be used in animal feed, which can greatly improve animal production performance, improve feed conversion efficiency and save grain The use of high-quality protein corn can make the amino acids in animal diets more balanced, improve the utilization rate of animal feed protein, reduce the discharge of nitrogen in animal manure, and thus alleviate the environmental pollution caused by breeding industry In recent years, countries all over the world attach great importance to the research and promotion of high-quality protein maize At present, the application research of high-quality protein maize breeding in China has reached the international leading level, and has made important progress in solving the problem of high-quality and high-yield spear eyebrow A batch of new combinations with high-quality and high-yield have been bred The yield has increased by 8% - 15% compared with the control group of common maize, and the content of lysine and tryptophan in the whole grain has increased by about 80%, achieving the goal of high-quality and high-yield Among them, Zhongdan 9409, which is cultivated by crop institute of Chinese Academy of Agricultural Sciences, has the best performance In addition, a number of reserve varieties are participating in regional test and production demonstration However, at present, the planting area of high-quality protein corn in China is less than 1 million mu per year Compared with the average planting area of more than 300 million mu per year in recent years, it is far from the requirement of the Ministry of agriculture to promote high-quality protein corn of 50 million mu by 2005 According to Zhang Shihuang, a maize breeding expert and director of the corn Department of Crop Institute of Chinese Academy of Agricultural Sciences, the main difficulties in the promotion of high-quality protein corn in China are as follows: first, there is a lack of systematic research on the use of high-quality protein corn as feed, and the lack of systematic research on the high-yield and Matching Cultivation Technology of new varieties, which affects the demonstration role and promotion speed of new varieties; third, there is a lack of systematic research on new varieties The technology of seed production is not perfect Recently, in Taiyuan, Shanxi Province, the first batch of national agricultural science and technology leapfrogging plan "high quality protein corn Zhongdan 9409 comprehensive technology system test demonstration" project is to integrate high-yield and high-efficiency supporting cultivation technology, nutritional value evaluation and high-efficiency supporting feed technology with the new combination of high quality protein corn Zhongdan 9409 as the core technology, and establish the breeding, reproduction and promotion of new high-quality corn varieties The system of integrated technology and experimental base, as well as the integrated industrial development system of species, breeding and processing The project of "Zhongdan 9409 comprehensive technical system test demonstration of high quality protein corn" is undertaken by crop institute of Chinese Academy of Agricultural Sciences, and completed in collaboration with feed Institute, soil and Fertilizer Institute of Chinese Academy of Agricultural Sciences and Shanxi Academy of Agricultural Sciences After the implementation of the project, the complete Zhongdan 9409 high-yield and high-efficiency cultivation technology system, high-quality protein corn high-efficiency feed formula and supporting feed technology will be put forward The implementation of this project will promote the smooth promotion of a number of new high-quality protein corn varieties, realize the close connection of planting industry, feed processing industry and breeding industry, form an industrial chain in line with China's national conditions, and establish an industrialization platform for the development of high-quality protein corn After the completion of the project, it is estimated that 10 million mu of high-quality protein corn will be popularized and planted every year, which can reduce the breeding cost of farmers by about 2 billion yuan DVN (author:)