【Main Characters of Varieties】
Sichuan: The whole growth period is 116 days. The first sheath is dark purple in color and has a spoon-shaped tip. The height of the plant is 275cm, and the height of ear is 115cm; the angle between the leaves and the stem, the sheath is light purple, the number of first-level side branches of the tassel is large, the angle between the main axis of the tassel and the branches is small, the posture of the tassel side branches is slightly curved, and the tassel is high. The length of the main axis above the lateral branches is short, the color of the base of the tassel glume is green, the color of the glume except the base is light purple, the color of anthers is dark purple, and the color of filaments is purple. The ear shape is intermediate, the ear length is 19.1cm, the number of ear rows is 16.7 rows, the number of rows is 36.5 grains, the thousand-grain weight is 322g, and the seed yield rate is 85.0%. The grain type is more horse tooth type, the top of the grain is mainly yellow, the back of the grain is orange-yellow, the color of the cob glume is pink, and the grain arrangement is straight. Grain bulk weight is 764g/L, crude protein is 9.81%, crude fat is 4.14%, crude starch is 61.7%, and lysine is 0.29%.
Chongqing: The whole growth period averages 130.4 days, which is 1.2 days shorter than the control Yudan 8. The seedling leaf sheath is light purple, leaf margin is purple, glume is purple, the plant is semi-compact, the plant height is 271 cm, the ear height is 110 cm, the number of leaves in the adult plant is about 19, the anthers are dark purple, and the filaments are purple. The ear length is 19.8 cm, the ear thickness is 5.3 cm, the bald tip is 0.5 cm, the number of rows in the ear is 16.4 rows, and the number of rows is 37.6 grains; the ear shape is intermediate, the cob is pink, the grain is orange, and the grain is partial, and the hundred-grain weight is 33.2 Grams.
【Adaptability】
Sichuan: Participated in the Sichuan Provincial Hybrid Corn Flat Hill Regional Trial in 2013, with an average yield of 494.2 kg per mu, an increase of 6.4% compared to the control single 30; the average yield of 584.6 kg per mu in 2014, an increase of 9.0% compared to the control single 30; two-year regional trial The average yield per mu is 544.4 kg, an average yield increase of 7.8% over the control. In the production test in 2015, the average yield per mu was 575.2 kg, which was an increase of 7.7% compared to the control single 30. The average rate of increase in production points in the two-year regional and production trials was 100%. After inoculation identification, it is resistant to small spot disease, medium resistance to stalk rot, large spot disease, sheath blight, ear rot and head smut.
Chongqing: In the one-year adaptability test in 2017, the average yield per mu at 10 points was 517.8 kg, an increase of 11.7% over the control Yudan 8. Resistance evaluation: high resistance to small spot disease, stem rot, large spot disease, sheath blight, ear rot.
【Main cultivation measures】
Sichuan: It is advisable to sow in early and mid-April; it is advisable to plant 2800-3200 plants per mu. Apply plantar fertilizer, light seedling fertilizer and jointing fertilizer, heavy application of spike fertilizer, combined application of nitrogen, phosphorus and potassium. Strengthen field management and timely control of pests and diseases.
Chongqing: 1. Suitable for spring sowing. 2. The density is about 2800 plants per mu. 3. Fertilization and management are the same as general single crosses, re-apply base fertilizer, apply jointing fertilizer at the right time, and attack panicle fertilizer.
[Suitable area for planting]
Pingba and hilly areas in Sichuan Province. Changsha City, Hengyang City, Xiangtan City, Shaoyang City, Yueyang City, Changde City, Zhangjiajie City, Yiyang City, Chenzhou City, Yongzhou City, Huaihua City, Loudi City, Xiangxi Autonomous Prefecture introduced the species. It is planted in hills, flat dams and low mountain areas at an altitude of 800 meters and below in Chongqing. Spring maize is introduced in mountainous and hilly areas at an altitude of 800 meters and below in the western part of Hubei 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 introduced between 1,000 and 2,000 meters above sea level.
