Beijing Jinhua Agricultural and Seed Science and Technology Co., Ltd. submitted an application, which was passed at the 9th meeting of the 3rd National Crop Variety Approval Committee on June 29th, 20 176087. The growth period is 100 days, and the maturity is earlier than that of Zheng Dan 958 1 ~ 2 days. Seedling leaf sheath is purple, leaf is green, leaf margin is green, anther is purple, glume is green, and male spike has 5 ~ 7 branches.
The plant type is semi-compact, the plant height is about 295 cm, the ear position is about 1 15 cm, and the whole plant has 19 ~ 20 leaves. Filaments are purple, spikes are tubular, spike length is 18cm, spike diameter is 4.8cm, spike rows are 14 ~ 16, spike axis is red, grain is yellow, half horse teeth, and 100 grains weigh 36g. Inoculation identification showed that it was moderately resistant to Curvularia leaf spot, sensitive to leaf spot and stem rot, and highly sensitive to ear rot, smut and rough dwarf.
cultivation techniques
Grain bulk density is 762g/L, crude protein is 65438 00.04%, crude fat is 3.73%, crude starch is 74.63%, and lysine is 0.32%. 20 15-20 16 participated in the regional trial of Huang-Huai-Hai, with an average yield of 697.4 kg per mu in two years, which was11%higher than that of the control. The production test in 20 16 years showed that the average yield per mu was 6 18.9 kg, which was 6.3% higher than that of the control Zheng Dan 958.
Planting in plots with medium fertility and above, sowing in early June, with planting density of 4000 ~ 4500 plants per mu. This variety conforms to the national maize variety approval standard and has passed the 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 control of leaf spot, stem rot, ear rot, smut and rough dwarf disease.