biological activity of soil

基本解釋

Soil organic matter (SOM) is the constitutive and biological basic substance of soil, is the condition and product of vital activity.
有機(jī)質(zhì)（SOM）是土壤具有結(jié)搆性和生物性的基本物質(zhì)，它是生命活動的條件，也是生命活動的産物。
Effect of a new pesticide, acetamiprid, on biological activity in upland soil was studied through analysis of soil enzyme activities and soil respiration.
通過對土壤呼吸強(qiáng)度和土壤酶活性的測定，研究了新型殺蟲劑啶蟲脒對旱地土壤生物活性的影響。
Soil organic matter (SOM) is the constitutive and biological basic substance of soil, is the condition and product of vital activity. Humic substance is major in SOM.
有機(jī)質(zhì)（SOM）是土壤具有結(jié)搆性和生物性的基本物質(zhì)，它是生命活動的條件，也是生命活動的産物。

Soil is, in part, the product of biological activity (all those earthworms, and so on).
ECONOMIST: Spaceflight