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)構(gòu)性和生物性的基本物質(zhì)，它是生命活動(dòng)的條件，也是生命活動(dòng)的產(chǎn)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(guò)對(duì)土壤呼吸強(qiáng)度和土壤酶活性的測(cè)定，研究了新型殺蟲(chóng)劑啶蟲(chóng)脒對(duì)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)構(gòu)性和生物性的基本物質(zhì)，它是生命活動(dòng)的條件，也是生命活動(dòng)的產(chǎn)物。

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