【Main Characters of Varieties】

Southwest spring corn group emerges to maturity about 121 days, which is about 1 day later than the control Yudan 8. The leaf sheath of the seedlings is purple to dark purple, the leaves are green, the anthers are light purple to purple, and the glumes are purple to dark purple. The plant is semi-compact, with a plant height of 262 cm, ear height 107.6 cm, ear cone to tube shape, ear length 18.25 cm, ear rows 14-16 rows, ear thickness 5.2 cm, white cobs, yellow kernels, intermediate type, One hundred grains weigh 35.65 grams. Quality analysis showed that the bulk weight of the grain was 748 g/L, the crude protein content was 11.54%, the crude fat content was 4.02%, the crude starch content was 69.28%, and the lysine content was 0.31%.

【Adaptability】

Participated in the southwest spring corn group regional test from 2016 to 2017, the average yield per mu in two years was 619.36 kg, which was 10.85% higher than the control Yudan 8. In the 2017 production test, the average yield per mu was 635.45 kg, an increase of 12.62% compared to the control Yudan 8. Vaccination identification, susceptible to large spot disease, susceptible head smut, susceptible gray spot disease, medium resistance to stem rot, susceptible ear rot, resistance to small spot disease, susceptible to sheath blight.

【Main cultivation measures】

Spring sowing is based on the standard that the ground temperature is stable above 10℃, and it can be sowed 5 to 10 days in advance by using plastic trays for seedling transplanting or mulching. The suitable density per mu is about 3000 plants. The base fertilizer is 1000-2000 kilograms per mu or more than 50 kilograms of N.P.K ternary compound fertilizer. Seedling fertilizer is applied when 4-5 leaves are visible, and 10 kg of urea per mu is applied. Spike fertilizer is applied when 10-12 leaves are visible, and 20 kg of urea is applied per mu. Granular fertilizer can be supplemented with granular fertilizer during the male-spinning and silking period, depending on the growth, and 5 kg of urea per mu is applied. Seedlings at the 3-leaf stage and fixed seedlings at the 4 to 5-leaf stage. After every fertilization, weeding, weeding, and soil covering are carried out in time, and the corn borer is prevented in the big bell-mouth stage.

[Suitable area for planting]

Suitable for the southwestern spring corn area in Sichuan Province, Chongqing City (excluding Dianjiang County), Hunan Province, Hubei Province, and southern Shaanxi Province 800 meters above sea level and lower hills, flat dams, low mountain areas, Guiyang City, Guizhou Province Nanzhou, Qiandongnan Prefecture, Tongren City (excluding Wanshan District), Zunyi City below 1100 meters above sea level, central Yunnan Province Kunming, Chuxiong, Yuxi, Dali, Qujing and other cities in the hills, flat ba, low mountain areas and Wenshan , Honghe, Pu'er, Lincang, Baoshan, Xishuangbanna, Dehong 800-1800 meters above sea level, Guilin City, Hezhou City, Guangxi Province, spring planting.