【Main Characters of Varieties】

The tropical and subtropical maize group emerges to maturity 108.4 days, which is 4.5 days earlier than the control Guidan 162. The seedling sheath is purple, the leaves are dark green, the anthers are light purple, and the glumes are light purple. The plant is semi-compact, with a plant height of 240 cm, a spike height of 95 cm, and a plant with 19 leaves. The ear is cone-shaped, the ear length is 18.2 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 half-dented. The hundred-grain weight is 32 grams. The grain weight is 742 g/L, the crude protein content is 11.16%, the crude fat content is 3.91%, the crude starch content is 72.28%, and the lysine content is 0.33%.

【Adaptability】

Participated in the tropical and subtropical corn group green channel regional test from 2018 to 2019. The average yield per mu in two years was 616.2 kg, which was an increase of 8.2% over the control Guidan 162. In the 2019 production test, the average yield per mu was 574.1 kg, an increase of 7.7% over the control Guidan 162. Inoculation identification, medium resistance to large spot disease, gray spot disease, stem rot, ear rot, small spot disease, southern rust, and susceptible sheath blight.

【Main cultivation measures】

1. It is suitable for planting in tropical and subtropical corn areas, and the temperature is stable above 12℃ for suitable sowing period.

2. The density is about 3500 plants per mu.

3. Pay attention to the prevention and control of sheath blight, and harvest in time.

4. Apply sufficient base fertilizer, early application of seedling fertilizer, heavy application of attack fertilizer, generally 1500 kg of farm manure, 20 kg of urea, 40 kg of phosphate fertilizer, 25 kg of potash fertilizer, and 15 days before tasseling, generally applied per mu. Apply 15 kg of ammonium bicarbonate and 7.5 kg of urea.

[Suitable area for planting]

It is suitable for planting in the tropical and subtropical corn regions of Guangxi Autonomous Region, Guangdong Province, Guizhou Province and the low-heat river valleys bordering Guangxi, Yunnan Province Wenshan, Mile, Lincang, Kunming, Xishuangbanna, Dehong and other cities and regions below 800 meters above sea level; Hunan Province Introduction; Planting spring maize in Pingba hilly areas in Sichuan Province; Introduction to areas with medium and above fertility soils in Guizhou Province below 1900 meters above sea level; Planting in spring sown maize regions in Southern Shaanxi; Introduction of spring maize in mountainous and hilly areas at an altitude of 800 meters and below in western Hubei Province .

【品种主要性状】：热带亚热带玉米组出苗至成熟108.4天，比对照桂单162早熟4.5天。幼苗叶鞘紫色，叶片深绿色，花药浅紫色，颖壳浅紫色。株型半紧凑，株高240厘米，穗位高95厘米，成株叶片数19片。果穗锥形，穗长18.2厘米，穗行数16－18行，穗粗5.1厘米，穗轴白色，籽粒黄色、半马齿，百粒重32克。籽粒容重742克/升，粗蛋白含量11.16%，粗脂肪含量3.91%，粗淀粉含量72.28%，赖氨酸含量0.33%。

【适应性】：2018－2019年参加热带亚热带玉米组绿色通道区域试验，两年平均亩产616.2千克，比对照桂单162增产8.2%。2019年生产试验，平均亩产574.1千克，比对照桂单162增产7.7%。接种鉴定，中抗大斑病、灰斑病、茎腐病、穗腐病、小斑病、南方锈病，感纹枯病。

【主要栽培措施】

1. 适宜在热带亚热带玉米区种植，气温稳定在12℃以上为适播期。

2. 亩密度3500株左右。

3. 注意防治纹枯病，适时收获。

4. 施足基肥，早施苗肥，重施攻苞肥，一般亩施农家肥1500千克，尿素20千克，磷肥40千克，钾肥25千克，攻苞肥在抽雄前15天深施，一般亩施碳铵15千克，尿素7.5千克。

【适宜种植区域】：适宜在热带亚热带玉米区的广西自治区、广东省、贵州省与广西接壤的低热河谷地带，云南省文山、弥勒、临沧、昆明、西双版纳、德宏等州市海拔800米以下地区种植；湖南省引种；四川省平坝丘陵春玉米类型区种植；贵州省海拔1900米以下中等以上肥力土壤地区引种；陕南春播玉米区种植；湖北省西部海拔800米及以下的山区、丘陵地区作春玉米引种。