Planting density is the major factor that affected production of sweet sorghum stem and Seed and saccharinity.
种植密度是影响甜高粱茎，种子和糖精含量的主要因素。
The results showed: planting density is the major factor that affected production of sweet sorghum stem and Seed and saccharinity .
结果表明：密度是影响甜高粱秸秆产量、籽粒产量和秸秆平均锤度的主要因素。
Mathematic models between yield and N fertilizer and plant density for two peanut variety types were set up by using quadratic saturation D-optimization design under single-seed planting.
采用二次饱和D—最优设计建立了精播条件下不同类型花生品种N肥用量和密度与产量的数学模型，探讨肥料与密度的产量效应及优化配置。
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