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  • 1Agronomy College, Shenyang Agricultural University, Shenyang, China.

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Summary
This summary is machine-generated.

Computer simulations for maize planting show ideal seedling emergence number planting is superior to optimum density planting. This method reduces yield fluctuations and increases overall yield, offering benefits for maize seed production.

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Area of Science:

  • Agricultural Science
  • Agronomy
  • Computer Simulation

Background:

  • Accurate maize planting simulations are crucial for optimizing yield.
  • Single seed precise sowing methods require careful evaluation for feasibility.
  • Understanding the relationship between planting density and yield is key.

Purpose of the Study:

  • To test the feasibility of computer simulation for field maize planting.
  • To compare two single seed sowing methods: optimum density planting and ideal seedling emergence number planting.
  • To analyze the impact of seedling emergence rate on maize yield and identify issues like seedling missing spots.

Main Methods:

  • Utilized a quadratic function model (Y = A×(D-Dm)²+Ym) to represent maize yield and planting density.
  • Compared yield reduction rate, yield fluctuation, and overall yield between the two sowing methods.
  • Investigated the correlation between seedling emergence rate and yield, as well as yield standard deviation.
  • Defined and analyzed "seedling missing spots" in relation to field seedling emergence rate using parabolic and negative exponential functions.

Main Results:

  • Ideal seedling emergence number planting demonstrated lower yield reduction rates and fluctuations compared to optimum density planting.
  • Ideal seedling emergence number planting resulted in a yield increase of at least 0.043 t/hm², with greater advantages at higher yield levels.
  • Both methods showed a strong positive correlation between yield and seedling emergence rate.
  • Yield standard deviation was strongly negatively correlated with seedling emergence rate for both methods.
  • Established functional relationships for "hundred-dot spot" and "spot missing seedling" based on field seedling emergence rate.

Conclusions:

  • Ideal seedling emergence number planting is a more advantageous method for single seed precise sowing in maize.
  • Computer simulations provide a feasible approach for evaluating and optimizing maize planting strategies.
  • The findings can guide maize seed production and enhance the precision of sowing techniques.