Characteristics: The growth period of spring sowing in Liaoning Province is 127 days. The plant type is semi-compact, the plant height is about 287 cm, the ear position is about11cm, and the plant leaves are about 20 pieces. The spike is tubular, the spike length is about 20.3 cm, the rows per spike are about 18, the spike axis is red, the seeds are yellow, the seeds are horse-toothed, the weight of 100 seeds is about 38.4 g, and the seed yield is 87.2%.
Yield performance: 20 16, with an average yield of 79 1.6 kg per mu, an increase of 9.9% compared with the control Xianyu 335. The average yield per mu of 20 17 was 872.0 kg, which was 8.7% higher than that of the control Xianyu 335. Participated in the same group production test in 20 17 years, and the average yield per mu was 866.9 kg, which was 0.2% higher than that of the control Xianyu 335.
Whole growth period of maize
From sowing to new grain maturity is the life of corn. Generally, the days from sowing to maturity of maize are called the whole growth period, and the days from emergence to maturity are called the growth period. The length of growth period and yield are related to variety characteristics, environmental conditions and other factors.
The required active accumulated temperature of a certain variety (the sum of daily average temperature of growing period ≥ 10℃) is basically stable, and the growing period will be shortened appropriately when the temperature is higher, and extended appropriately when the temperature is lower. The yield is generally divided into five categories: early maturity, middle maturity, middle maturity, middle maturity and late maturity.
In dry corn area, single cropping and spring sowing are the main planting methods. Because of the vast land, the ecological conditions have changed obviously. The frost-free period gradually increased from north to south. The frost-free period in the main corn planting areas was 130- 180 days, and the active accumulated temperature gradually increased from north to south, with an average of about 3 100℃. The growth period of spring maize varies greatly, generally between 100- 135 days.
Reference to the above content: Baidu Encyclopedia-Dongdan 1902