Step 1: Concept
This planting pattern allows for mechanical intercultural operations in two perpendicular directions.
Step 2: Meaning
The seeds are placed at the corners of imaginary squares.
Step 3: Analysis
In check row planting, the distance between consecutive plants in a row is kept exactly equal to the distance between the rows themselves.
Step 4: Conclusion
This specific geometry is the hallmark of check row planting.
Final Answer: (A)