【Main Characters of Varieties】

The southwest spring corn (middle and low altitude) group emerged to maturity 120.6 days, which was 2.8 days later than the control. The seedling leaf sheath is light purple, the leaves are green, the anthers are yellow, and the glumes are green. The plant is semi-compact, with a plant height of 288 cm, a spike height of 129 cm, and a plant with 20 leaves. The ear is cone-shaped, the ear length is 21.1 cm, the number of ear rows is 16-18, the ear thickness is 5.4 cm, the cob is white, the grain is yellow and hard, and the hundred-grain weight is 34 grams. Grain bulk weight is 794 g/L, crude protein content is 11.42%, crude fat content is 3.94%, crude starch content is 72.73%, and lysine content is 0.32%. The southwest spring corn (medium-high altitude) group emerged to maturity in 125.1 days, which was 2.1 days later than the control. The seedling leaf sheath is light purple, the leaves are green, the anthers are yellow, and the glumes are green. The plant is semi-compact, with a plant height of 274 cm, a spike height of 122 cm, and a plant with 20 leaves. The ear is cone-shaped, the ear length is 20.9 cm, the number of ear rows is 16-18, the ear thickness is 5.1 cm, the cob is white, the grain is yellow, and the grain is hard. The hundred-grain weight is 32 grams. Grain bulk weight is 815 g/L, crude protein content is 11.14%, crude fat content is 3.46%, crude starch content is 74.92%, and lysine content is 0.29%.

【Adaptability】

Participated in the Southwest Spring Corn (Mid-low Elevation) Group Consortium Regional Test from 2018 to 2019. The average yield per mu in two years was 606.5 kg, an increase of 13.8% over the control. In the 2019 production test, the average yield per mu was 588.7 kg, an increase of 9.8% 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 668.7 kg, an increase of 11.4% over the control. In the 2019 production test, the average yield per mu was 701.8 kg, an increase of 5.8% over the control Zhongyu 335. Inoculation identification, medium resistance to large spot disease, susceptible to gray spot, susceptible to stem rot, susceptible to ear rot, resistance to small spot, susceptible to sheath blight, and 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 done in time, and attention should be paid to the prevention and control of sheath blight, ear rot, stem rot, and gray spot disease.

[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 .