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Physiological characteristics of corn
Corn thrives in warm conditions, with the ideal temperature for seed germination ranging between 25°C and 30°C. During the jointing stage, a daily average temperature of at least 18°C is necessary, and higher temperatures generally promote faster growth. From tasselling to flowering, the optimal temperature range is 26°C to 27°C. For grain filling and maturation, maintaining a temperature between 20°C and 24°C is essential to support nutrient accumulation. If temperatures drop below 16°C or rise above 25°C, amylase activity can be disrupted, leading to incomplete grain development.
Different maize varieties are categorized based on their maturity periods: early, medium, and late. Each has specific accumulated temperature requirements—early varieties need 2000–2300°C, medium varieties require 2300–2500°C, and late varieties need 2500–2800°C. This variation influences planting times and growing conditions.
As a short-day crop, corn responds to light duration. When exposed to less than 12 hours of sunlight, the plant grows shorter, tassels earlier, and matures more quickly. In contrast, under long-day conditions, the plants become taller, with more lush foliage, but their development slows down, flowering is delayed, and in some cases, ears may not form at all. Early-maturing varieties tend to be less sensitive to day length, while late-maturing types are more responsive.
Corn uses the C4 photosynthetic pathway, making it highly efficient in utilizing strong light. It can also carry out photosynthesis effectively under low light and low COâ‚‚ conditions, giving it an advantage in various environments.
In terms of soil, corn can grow in sandy, loamy, and clay soils, but prefers a pH range of 5 to 8, with the most suitable being 6.5 to 7.0. However, it has limited tolerance to salinity and alkalinity, especially when chloride ions are present, which can significantly harm the plant's growth and yield.
Veterinary ultrasound machine is widely used in pet hospitals, scientific research and experimental institutions, farms, according to the animal size and different parts of the examination, you can choose the corresponding model of the machine and probe, to meet a variety of customer needs.