field soil volume weight tester 土壤盐度及含水量测定仪
decrease soil volume weight 降低土壤容重
The results showed that forest harvesting resulted in increase in soil volume weight, lessening porosity, and decline in function of water holding.
结果表明：森林采伐后土壤容重增大，孔隙度减小，土壤持水性能降低。
The influence of volume weight of soil on maize seedlings growth was researched under condition of controlling water and fertilizers.
在控制水分、肥料的条件下，用盆栽试验研究土壤容重对玉米苗期生长的影响。
It is suggested that compaction, volume weight of submerged soil and settling rate may be used as the diagnostic indices of soil settling compactability.
文中提出建议，可以土壤坚实度、浸水容重和沉淀曲线作为此类土壤的诊断指标。
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