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。

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In this study, the effects of a new type of biological organic fertilizer (NAEF) on tomato growth, yield and soil activity quality were studied through pot experiments.

应用盆栽试验研究了新型生物有机肥(NAEF)对番茄生长发育、产量及土壤活性质量等方面的作用效果。

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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。

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

ECONOMIST: Spaceflight