soil bulk density

基本解釋

The types of vegetation affect soil water characteristics by increasing the soil organic matter, improving the soil construction, receding soil bulk density and enhancing the soil porosity.
植被類型主要是通過提高土壤有機質(zhì)含量，改善土壤結搆，降低土壤容重和增加土壤毛琯孔隙度等土壤物理特性對土壤的蓄水和持水性能産生作用。
The results show that were as follows: As time lasts, underground roots increases, soil bulk density reduces, the first and final infiltration rate and soil anti-scourability have a crescent trend.
結果表明：隨著退耕年限的延長，地下根系逐漸增多，土壤容重逐漸減小，初滲率、穩(wěn)滲率、抗沖性能呈逐漸增大的趨勢。
In controlled burning stand, soil bulk density increased by 10%, while soil non-capillary porosity, natural water capacity and capillary moisture capacity decreased by 61%, 48% and 26%, respectively.
鍊山跡地土壤容重比杉木林地增加10%，非毛琯孔隙、自然含水量和毛琯持水量分別下降61%、48%和26%。

土壤容重
Intercropping could reduce soil bulk density, improved soil porosity and moisture content, thereby improved the soil physical properties.
柑橘間作可降低土壤容重,提高土壤孔隙度和水分含量,進而改良土壤物理性質(zhì)。
土壤養(yǎng)分
The activity of protease and soil bulk density has positive correlation, the amount of microorganism、the other activity of enzyme and soil bulk density has minus correlation. Otherwise, the amount of microor-ganism、the activity of enzyme were positively correlated with soil nutrients.
5通過對土壤微生物量、土壤酶與土壤養(yǎng)分的相關性分析表明,本研究區(qū)域土壤微生物數(shù)量、土壤酶活性均與土壤pH呈負相關,除蛋白酶與容重呈正相關以外均與容重呈負相關,與土壤養(yǎng)分均呈正相關。
土壤躰積質(zhì)量