【Main Characters of Varieties】

Hunan: The growth period is 111.9 days, which is 0.1 day shorter than the control Lin'ao 1. The seedling leaf sheath is purple, the plant type is semi-compact, the plant height is 271.8 cm, the ear height is 113.9 cm, the number of leaves in the adult plant is 18-20, the ear is long and cylindrical, the ear length is 19.6 cm, the bald tip length is 0.7 cm, and the ear thickness is 5.1 cm , The number of rows per ear is 18.4 rows, the number of rows is 39.3 grains, the cob is white, the grains are dent-shaped, yellow, and the 100-grain weight is 29.4 grams. The grain weight is 744 g/L, the crude protein content is 9.62%, the crude fat content is 4.12%, the crude starch content is 72.66%, and the lysine content is 0.32%.

Sichuan: The average growth period is 120 days.

Chongqing: The whole growth period is 116.0 days, which is 0.3 days shorter than the control Yudan 8. The seedling leaf sheath is purple, the plant type is semi-compact, the plant height is 269.0 cm, the ear height is 111.3 cm, and the number of leaves in the adult plant is 18-20. The ear length is 20.6 cm, the ear thickness is 5.1 cm, the number of ear rows is 18.4 rows, and the number of rows is 39.3 grains; the ear is long cylindrical, the cob is white, the grain is yellow, and the grain is dent. The hundred-grain weight is 29.9 grams, and the seed yield is 85.1%.

【Adaptability】

Hunan: Participated in the regional test in Hunan Province in 2016, with an average yield of 544.1 kg per mu, which was 5.7% higher than the control; the continued test in 2017, an average yield of 495.8 kg per mu, an increase of 8.5% over the control; the average yield per mu in the two-year regional test was 519.9 kg, which was higher than the control. The control increased production by 7.1%. In the 2017 production test, the average yield per mu was 553.5 kg, an increase of 9.4% over the control. Field performance: empty stalk rate 0.1%, lodging rate 0.3%, no inversion, large spot disease 1.0 grade, small spot disease 1.4 grade, sheath blight 1.8 grade, gray spot disease 1.0 grade, stalk rot 1.0 grade, corn borer 1.0 level.

Sichuan: In 2018, the average yield of 14 test sites was 563 kg per mu, an average yield increase of 6.3% over the control; the rate of yield increase was 100%; it was identified by the Institute of Plant Protection, Sichuan Academy of Agricultural Sciences: medium resistance to large spot disease, small spot disease, and silk smut resistance Diseases, susceptible to ear rot, sheath blight, and highly susceptible to stem rot.

Chongqing: In the one-year adaptability test in 2018, the average yield per mu at 6 points was 557.9 kg, an increase of 6.2% over the control Yudan 8. Resistance evaluation: resistance to large spot disease, small spot disease, susceptible sheath blight, high resistance to ear rot, medium resistance to stalk rot.

Guizhou: In 2018, the average growth period of the 8 pilots of the introduction test was 121.8 days; the average yield per mu was 664.2 kg, which was 11.9% higher than the control Xinzhongyu 801, and the yield rate was 100%. Appraised by the Institute of Plant Protection of Guizhou Province: high resistance to head smut, large spot and small spot, gray spot and ear rot, medium resistance to rust.

【Main cultivation measures】

Sown in late March in southern Hunan, late March in central Hunan, and northwestern Hunan from the end of March to early April, planting 2,800-3200 plants per mu. Apply enough base fertilizer, 1000-2000 kg farmyard manure per mu, 50 kg ternary compound fertilizer, and 20 kg urea per mu from the four-leaf stage to the jointing stage. Timely control sheath blight and corn borer.

[Suitable area for planting]

Spring corn is planted in Hunan Province. It is planted in hills, flat dams and low mountain areas at an altitude of 800 meters and below in Chongqing. Guiyang City, Zunyi City, Qiandongnan Prefecture, Qiannan Prefecture, Tongren City, and Jinsha County of Bijie City are areas with medium and above fertile soil below 1,500 meters above sea level in Guizhou 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, Yuxi City, Honghe Prefecture and Wenshan Prefecture have corn planting areas with an altitude of 1,000-2,000 meters. Spring corn type area in Pingba hilly area in Sichuan Province. Spring maize is introduced in areas 800 meters above sea level and below in Hubei Province. Spring sowing corn area in southern Shaanxi.