常見例句雙語例句Soil organic matter (SOM) is the constitutive and biological basic substance of soil, is the condition and product of vital activity.有機質(SOM)是土壤具有結搆性和生物性的基本物質,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.有機質(SOM)是土壤具有結搆性和生物性的基本物質,它是生命活動的條件,也是生命活動的産物。權威例句Soil is, in part, the product of biological activity (all those earthworms, and so on).ECONOMIST: Spaceflight 返回 biological activity of soil