Study on Close Planting and Nutrient Improvement of Maize II.Effect of Row Distance to Yield and Nutrition of Maize

The result of field experiment with 4 leaf straight-up type maize hybrids,3 planting models (50 cm distance between rows,6-angle shape,67 cm distance between rows),3 densites (60 000 plants/ha,75 000 plants/ha,90 000 plants/ha) indicated:The first main factor which affect maize yield potential developing is density;The second is distance between rows;The third is variety under this experimental conditions;The yield of maize hybrids is increasing as density increasing,the maize nutrient area is decreasing as density increasing.