biological activity of soil

基本解释

Soil organic matter (SOM) is the constitutive and biological basic substance of soil, is the condition and product of vital activity.
有机质（SOM）是土壤具有结构性和生物性的基本物质，它是生命活动的条件，也是生命活动的产物。
Effect of a new pesticide, acetamiprid, on biological activity in upland soil was studied through analysis of soil enzyme activities and soil respiration.
通过对土壤呼吸强度和土壤酶活性的测定，研究了新型杀虫剂啶虫脒对旱地土壤生物活性的影响。
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.
有机质（SOM）是土壤具有结构性和生物性的基本物质，它是生命活动的条件，也是生命活动的产物。

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