【Main Characters of Varieties】
Hubei: The plant is semi-compact. The seedling leaf sheath is purple, and the number of adult leaves is about 21. The tassels have about 15 branches, the anthers are light purple, the glumes are purple, and the filaments are light purple. The bracts are short, with exposed tips, cone-shaped ears, red cobs, yellow grains, and horse-tooth-shaped. In the regional test, the average plant height is 287 cm, the ear height is 124 cm, the empty stalk rate is 1.2%, the ear length is 17.6 cm, the ear thickness is 5.2 cm, the bald tip length is 1.2 cm, the number of ear rows is 18.7, the number of rows is 35.1, and the thousand-grain weight is 280.1 grams. The seed yield rate from dry ears was 85.1%. The growth period is 114 days. The quality is determined by the Cereal Quality Supervision, Inspection and Testing Center of the Ministry of Agriculture. The bulk density is 720 g/L, the crude starch (dry basis) content is 71.89%, the crude protein (dry basis) content is 10.02%, the crude fat (dry basis) content is 4.01%, and lysine The acid (dry basis) content is 0.30%.
Chongqing: average 129.6 days from emergence to maturity, the first sheath is purple, the plant is semi-compact, the plant height is 287 cm, the ear height is 124 cm, the leaf margin is purple, the number of adult leaves is 21, the anther is purple, the glume is purple, the filament is shallow Purple; ear length 19.6 cm, ear row number 18-20 rows, row grain number 35.1 grains; spike-shaped cone-shaped, cob red, orange-yellow grains, horse-toothed, 100-grain weight 28.1 grams.
【Adaptability】
Hubei: Participated in the regional test of low mountain plains corn varieties in Hubei Province from 2009 to 2010. The average yield per mu in the two-year regional test was 598.64 kg, which was 7.31% higher than the control Yidan 629. Among them: the yield per mu in 2009 was 653.94 kg, an increase of 6.63% over the control; the yield per mu in 2010 was 543.34 kg, an increase of 8.14% over the control. Field large spot disease is 0.7 grade, small spot disease is 1.6 grade, stalk rot diseased plant rate is 6.3%, rust disease is 0.3 grade, ear rot is 1.2 grade, and sheath blight disease refers to 8.5. The field lodging (discount) rate is 7.6%.
Shaanxi: Participated in the introduction test of spring sown corn in Shaanxi in 2012, with an average yield of 625 kg per mu.
Chongqing: Under the adaptability test at a density of 2800 plants/mu, it was 2 days earlier than the control Yudan 8; in the 2016 one-year adaptability test, the 10-point average yield was 476.1 kg, which was an increase of 5.8% over the control Yudan 8. Resistance evaluation: resistance to large spot disease, small spot disease, head smut and ear rot, medium resistance to sheath blight and stem rot.
【Main cultivation measures】
Hubei:
1. Plant seeds at the right time and plant them closely. Sowing from the end of March to the beginning of April, the planting density of single cropping is about 3300 plants per mu.
2. Formula fertilization. Grasp the fertilization principles of pre-control, middle-promoting, and post-replenishment, apply plantar fertilizer, and top-dress in an appropriate amount at the right time.
3. Strengthen field management. Do a good job in cultivating and weeding, cultivating soil, and fighting drought and draining waterlogging.
4. Pay attention to the prevention and control of stem rot, sheath blight, ear rot, cutworm, corn borer and other diseases and insect pests.
Chongqing: Suitable for spring planting, with a density of about 2800-3000 plants per mu. Fertilization and management are the same as general single-cross species, re-application of base fertilizer, timely application of jointing fertilizer, and aggressive panicle fertilizer; timely control of pests and diseases.
[Suitable area for planting]
It is suitable for planting spring maize in the hilly and plain areas of Hubei Province. It is suitable for spring planting below 900 meters above sea level in Hanzhong and Ankang areas of Shaanxi. It is suitable for planting in hills, flat dams and low mountain areas at an altitude of 800 meters and below in Chongqing. Introduced in Hunan Province. Ten prefectures of Zhaotong City, Kunming City, Lijiang City, Dehong Prefecture, Qujing City, Chuxiong Prefecture, Dali Prefecture, Baoshan City, Lincang City, and Pu'er City in Yunnan Province are planted in corn areas with an altitude of 1,000 to 2,000 meters.
