Introduction of Maize Variety Denghai 187

Denghai 187 maize is a maize variety selected by Shandong Denghai Seed Industry Co., Ltd., and the variety is M54× Denghai 6 1.

A new maize variety, Laizhou Denghai 187, was successful for the first time with outstanding performance. The sowing date is June 25th, the growth period is 1 15 days, and the paid-in area is 3.54 mu. The fresh ear weight of harvested corn was 4896 kg, the seed yield was 84.44%, and the average water content of grain was 30.9%, calculated as 65438+.

Characteristics: It takes about 10 1 day from emergence to maturity in Huanghuaihai summer maize region, two days earlier than Zheng Dan 958. The seedlings have purple leaf sheaths, dark green leaves, green leaf margins, lavender anthers and green glumes. The plant type is compact, the plant height is 244 cm, the ear position is 87 cm, and the number of leaves is 20. Filaments are green with columnar spikes, the spike length is 17.3 cm, the average number of rows per spike is 16.0, the spike axis is red, the grain weight is yellow, and the 100-grain weight is 31.0 g. The inoculation identification shows that it is effective against leaf spot, Curvularia leaf spot, stem rot, ear rot, smut and rough dwarf disease. Grain bulk density is 778g/L, crude protein content 12. 12%, crude fat content 4. 13%, crude starch content 7 1.02% and lysine content 0.35%.

Yield performance: 20 14-20 15 participated in the regional test of summer maize varieties in Huanghuaihai, with an average yield of 735.8 kg per mu in two years, which was 8.9% higher than that of the control; The production test in 20 16 years showed that the average yield per mu was 686.4 kg, which was 6.7% higher than that of the control Zheng Dan 958.

Key points of cultivation technology: cultivate in plots with medium fertility or above, and sow in early to middle June, with planting density of 4500-5000 plants per mu.

Examination and approval opinion: This variety conforms to the national maize variety examination and approval standard and has passed the examination and approval. It is suitable for planting in summer maize areas of Huang-Huai-Hai, such as Beijing, Tianjin, Baoding, Hebei and its south, southwest of Shanxi, Henan, Shandong, Huaibei of Anhui, Guanzhong irrigation area of Shaanxi. Pay attention to the prevention and treatment of smut and rough dwarf disease.