Spring corn

The planting season of corn is different, so today I will tell you about the characteristics and types of spring corn:

Spring Corn Crop Characteristics

The sowing and harvesting period of spring corn varies greatly from region to region. Generally, from south to north, there are areas where spring corn is sown from mid-February to early May. Generally, it is best to sow when the temperature of the 10cm soil layer is stable above 10℃. The harvesting period also varies from south to north, from late July to late May.

From the 10th day of the first lunar month to the middle of September, the difference is more than 50 days. Its growth characteristics are slow growth in the seedling stage, short internodes at the base, low ear position, strong plants, and strong resistance to lodging. The ear is large and the yield per plant is high. In the hot summer and rainy season, it is susceptible to large spot disease and small spot disease; in the cold mountainous areas, it is susceptible to head smut and powdery mildew. The main pests are cutworms, corn borers, etc. The cultivation methods include monoculture, or intercropping and relay cropping with beans, potatoes, etc.

Spring corn variety introduction

Jinhai 5 is a medium-late maturing corn hybrid with large ears. It has a growth period of 120 days in spring sowing, a compact plant shape, and a plant height of about 250cm. The ear height is about 90cm. The ear is long and cylindrical, the grain is yellow, dent-shaped, and the axis is light red. It has a well-developed root system, strong drought resistance, lodging resistance, and disease resistance. The average yield per mu is 750-800 kg, and it can be increased to 1000 kg/mu in high water and fertilizer plots. 3000-3500 seedlings per mu are guaranteed.

Tunyu 65 is a medium-late maturing variety with large spikes. The growth period is about 130 days after spring sowing. The plant is lush and the plant is semi-compact. The plant height is 260-280 cm, the ear height is 105 cm, the ear length is 24 cm, and there are 18-20 rows of ears. The grains are yellow, semi-dent-shaped, with red axis and a thousand-grain weight of about 400 grams. The live stalks are mature and resistant to large and small spot diseases, bacterial wilt, and head smut. The average yield per mu is 650 kg, and the high yield can reach more than 800 kg.

Cultivation tips: This variety has great potential for high yields. Choose medium to high fertility soil and maintain about 3,000 seedlings per mu.

Tianta 212 This variety is a medium-late maturing, large-ear variety. The growth period for spring sowing is about 118 days, and for summer sowing is about 100 days. The plant height is about 250 cm, the ear height is 87 cm, the number of ear rows is 18-20, the ear is long-cylindrical, the ear axis is light red, the grain is yellow, semi-horse-tooth, the thousand-grain weight is about 330 grams, and the seed yield rate is 84.7%. This variety has a semi-compact plant type, a well-developed root system, strong disease resistance, lodging resistance, and drought resistance, high yield and good stability. In the regional trials of Tianjin over the years, the yield has increased by more than 10% compared with Nongda 108 (13.9% increase in 2000, 11% increase in 2005), and it is a substitute for Nongda 108. Generally, the yield per mu of the field can reach 700 kg, and the production potential of high-water and high-fertilizer plots is up to 900 kg.

Cultivation tips: This variety is generally planted in the field at 3,500 plants per mu, apply sufficient base fertilizer, pay attention to the coordinated use of nitrogen, phosphorus and potassium, and prevent and control diseases and pests in time.