bulk density of soil meaning in English

土壤单位体积密度
土壤容重

Test method for bulk density of soils
土壤体密度的试验方法
The results showed that straw returning had not significantly increased the content of organic matter except for the treatment b . the treatments of straw - returning had a tendency to decrease the bulk density of soil in a no significant manner , thus increased the porosity of soil
实验室内对土壤微团聚体的分析还表明，随着稻草的施入，土壤的微团聚化程度得到了提高，但全量整株还田处理与其它处理之间差异很小。