Characteristics and Planting Techniques of Gaoyou 115 Variety

October 10, 2018

Gaoyou 115 is a high-oil type hybrid cultivated by the China Agricultural University in the early 1990s. It was approved by the Tianjin variety in 1996. The characteristics of the variety are: 1. It is of medium-late-maturing type with a growth period of 115--120 days. Plant height 285cm, ear position 150cm. Plants have dark green leaves, strong growth, tough stems, and well-developed root systems, especially with strong aerial roots, and have strong resistance to lodging. Ear-tube type, dark yellow grains, half-dental type, large embryos, 310-grain weight 310 grams. 2. Good quality. The oil content of seeds is 8.8-10%, which is 80-100% higher than normal corn (3-5% of normal corn), and the content of protein (11.3%), lysine (0.33%), VA, VE, etc. Significantly higher than normal corn, is a high-quality raw material resources for the processing industry. Its industrial processing products such as corn oil are the best-selling high-quality health food oils on the international market. Corn starch and its derivatives can be used as the main raw materials for the production of high fructose syrups and modified starches. High-oil corn kernels are used for breeding, without adding fat and reducing the addition of other raw materials, reducing costs and increasing feed conversion rates. When the high-oil corn matures, the straw is green and tender, the crude protein content is 8.5%, about 30% higher than the normal corn stalk (6.6%), and even more than the US harvested whole-crop corn (8.1%). Silage. According to the experiment of feeding beef cattle and dairy cows in 1998, using high-oil corn stalks, the average daily gain of beef cattle increased by 0.14 kg compared with the ordinary corn group, and the feed conversion rate increased by nearly 30%. In dairy cows, there was a significant improvement in milk quality fed with high oil corn stover. The utilization of high-oil corn stalks has important significance for the unification of economic benefits, social benefits, and ecological benefits for the development of straw livestock husbandry and straw returning to the fields. 3. High oil corn has strong stability. According to years of large-scale planting, high-oil corn has strong drought resistance and stubbornness, stable yield, and a large area of ​​450-500 kg per mu, producing about 2,500 kg of high-quality green straw. 4. Strong resistance to pests and diseases. It is highly resistant and evasive to major pests that cause damage to corn such as aphids, corn borers and cotton bollworms. It has high resistance to large and small leaf spot, smut, dwarfism, and bacterial wilt, especially to bacterial wilt even to the degree of close immunity. 5. Highly resistant. With a high degree of patience or resistance to various harsh environments. Including low temperature during seedling stage, drought resistance during early growth period, high temperature during filling, resistance to rain, resistance to natural disasters such as waterlogging, and strong endurance to saline soil. 6. Extensive adaptability. Starting from Heilongjiang in the north, it has grown well from North China to the Yellow River Basin and Sichuan. Key points for planting techniques: The high oil 115 plant height is relatively high, and its characteristics should be centered on lodging resistance. 1. Sowing date: It is appropriate to use the end of April-early May in northern North China. 2. Density: Around 3300-3500 strains. 3. Balanced fertilization, reuse of potash, Mushi pure N 25--30 kg, P2O5 18--21 kg, K2O 10-15 kg. 4. Conditions in the area can take deep soil loose measures, that is, before the sowing of maize or between the seedlings more than 25cm deep loose, promote root growth, enhance plant resistance to lodging. The city introduced Gaoyou No.115 from 1993 and has completed the research and development of the variety certification and supporting technologies. The “High Oil Maize Development Demonstration Project” was approved by the Municipal Science and Technology Commission in 1995 and passed the municipal appraisal in 1997 and won the municipal scientific and technological achievements. prize. The Tianjin Agricultural Technology Promotion Station has obtained the high oil 115 seed production right and has carried out large-scale hybrid seed production. Chinese Agricultural Editor