【Main Characters of Varieties】
Southwest spring corn (middle and low altitude) group emerges to maturity 117.2 days, which is 0.7 days earlier than the control. The seedlings have purple sheaths, dark green leaves, yellow anthers and purple glumes. The plant is semi-compact, with a plant height of 274 cm, a spike height of 113 cm, and a plant with 20 leaves. The ear is cone-shaped, the ear length is 17.9 cm, the number of ear rows is 16-18, the ear thickness is 5.6 cm, the cob is white, the grain is yellow, and the grain is hard, and the hundred-grain weight is 35.9 grams. The grain weight is 786 g/L, the crude protein content is 11.60%, the crude fat content is 4.19%, the crude starch content is 72.04%, and the lysine content is 0.33%. The southwest spring corn (medium-high altitude) group emerged to maturity 122.2 days, which was 0.8 days earlier than the control. The seedlings have purple sheaths, dark green leaves, yellow anthers and purple glumes. The plant is semi-compact, with a plant height of 262 cm, a spike height of 104 cm, and a plant with 20 leaves. The ear is cone-shaped, the ear length is 18.1 cm, the number of ear rows is 16-18, the ear thickness is 5.3 cm, the cob is white, the grain is yellow, and the grain is hard, and the hundred-grain weight is 33.9 grams. The grain weight is 796 g/L, the crude protein content is 10.29%, the crude fat content is 4.02%, the crude starch content is 74.65%, and the lysine content is 0.28%.
【Adaptability】
Participated in the Southwest Spring Corn (Mid-low Altitude) Group Consortium Regional Test from 2018 to 2019. The average yield per mu in two years was 554.2 kg, an increase of 4.0% over the control. In the production test in 2019, the average yield per mu was 560.9 kg, an increase of 4.6% over the control Zhongyu 335. Participated in the Southwest Spring Corn (Mid-High Altitude) Group Consortium Regional Test from 2018 to 2019. The average yield per mu in two years was 621.8 kg, an increase of 3.6% over the control. In the 2019 production test, the average yield per mu was 674.4 kg, an increase of 1.6% over the control Zhongyu 335. Inoculation identification, medium resistance to large spot disease, medium resistance to gray spot disease, susceptible stem rot, susceptible ear rot, medium resistance to small spot disease, susceptible sheath blight, medium resistance to southern rust.
【Main cultivation measures】
1. Sowing date: Spring sowing is based on the stability of the ground temperature above 10°C. The seedling can be sown 5-10 days in advance by using plastic trays for seedling transplanting or mulching.
2. Density: about 3000 plants/mu.
3. Base fertilizer: 1000-2000 kilograms of manure per mu or more than 50 kilograms of N.P.K ternary compound fertilizer.
4. Seedling fertilizer: apply when 4-5 leaves are visible, apply 10 kilograms of urea per mu.
5. Ear fertilizer: apply when 10-12 leaves are visible, apply 20 kg of urea per mu.
6. Grain fertilizer: depending on the growth situation, supplementary fertilizer can be applied during the male and silking period, 5 kg of urea per mu.
7. Management: Seedlings in the 3-leaf period, fixed seedlings in the 4-5-leaf period. After each fertilization, weeding, weeding, and soil covering should be carried out in time, and attention should be paid to the prevention and control of ear rot, stem rot, and sheath blight.
[Suitable area for planting]
Suitable for spring maize (medium-low altitude) areas in the southwest of Sichuan, Chongqing, Hunan, Hubei, southern Shaanxi and other hills, flat dams, and low-mountain areas at an altitude of 800 meters or less; Qiannan Prefecture, Guizhou Province Southeast Prefecture, Tongren City, and Zunyi City below 1100 meters above sea level; Guilin City, Hezhou City, Guangxi; Southwest Spring Corn (medium-high altitude) areas in Sichuan Province, Ganzi Prefecture, Aba Prefecture, Liangshan Prefecture, etc. 800-2200 meters above sea level; Guizhou It is planted in areas with an altitude of 1100m-2200m in Guiyang City, Bijie City, Qianxinan Prefecture, etc.; in Kunming, Chuxiong, Yuxi, Dali, Qujing, Zhaotong, Lincang, Dehong and other cities in central Yunnan Province, planted at an altitude of 1000m-2200m .
