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。
2
The ratios of stem, bark and branch biomass to total biomass of stand and individual tree are basically steady in different site index and planting density.
林分和单株的树干、树枝、树皮生物量组成比例均随立地指数、造林密度的变化无明显的差异。
3
The results showed that most traits of stem bark were benefited from elevated CO2 and reduced with the increase of plant density, whether statistically significant or not.