16mm Diameter Ball Screw,Ball Screws Cnc Router,Miniature Ball Screw 16Mm,Precision 16Mm Ball Screw Suzhou Industrial Park Hojama Technology Co., Ltd , https://www.hojamax.com
Factors Affecting High Yield of Summer Maize
1. Poor Seed Selection
The current seed breeding system is still not fully developed, which leads to a significant presence of substandard corn seeds in the market. Some farmers, driven by cost concerns, purchase so-called high-quality varieties from small traders or informal seed suppliers at low prices. This often results in poor germination rates, weak plant growth, and ultimately, major yield losses. The lack of proper quality control and certification makes it difficult for farmers to distinguish between genuine and fake seeds, further exacerbating the problem.
2. Improper Planting Density
One of the most common issues in summer corn cultivation is the overuse of high planting density. For instance, some farmers plant "Nongda 108" with more than 5,000 seedlings per 667 square meters (one acre), which is about one-third higher than the recommended density for that variety. This overcrowding leads to poor individual plant development, increased empty stalks, and severe ear barrenness. As a result, the plants become weak and prone to lodging, significantly reducing overall yield and grain quality.
3. Unscientific Fertilization Practices
Many farmers tend to over-apply nitrogen while neglecting phosphorus, potassium, and micronutrients. According to the law of the minimum, crop yields are limited by the nutrient that is in shortest supply. Excessive use of nitrogen can actually reduce yield potential, as it weakens the plant's structural integrity, increases susceptibility to diseases and pests, and leads to lodging. Additionally, improper fertilization—such as using maize-specific fertilizers with insufficient levels of essential nutrients—can also lead to poor growth and lower production.
4. Inappropriate Water Management
Some farmers rely on rainfall rather than following the actual water needs of the corn plants. They may overwater during non-critical periods or fail to provide adequate irrigation during droughts. This inconsistent watering disrupts the plant’s growth cycle, especially during critical stages such as tasseling and silking. As a result, the plants struggle to develop properly, leading to reduced kernel fill and lower overall yields.
By addressing these key issues—seed selection, planting density, fertilization, and irrigation—farmers can significantly improve their corn production and achieve better economic returns.