The agronomic characters and yield performance of'Jingu 21'millet were investigated by setting four densities and four methods for retaining seedlings.The results showed that planting density was a significant factor affecting yield.The ear length and ear diameter decreased with the increase of plant density and seedling retaining pattern,and the highest yield was obtained under the 2～3 plants per 667m2 condition.The optimal planting density for'Jingu 21'millet was determined to be 12 000 plants per 667m2,retaining 2～3 plants per 667m2.
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