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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Biological activity in a soil is influenced by soil acidity and nutrient status.

活动被土壤养分含量状况所制约。

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

ECONOMIST: Spaceflight

Both landers had mechanical arms, to gather soil samples, and built-in labs to check for biological activity.

NEWYORKER: The Martian Chroniclers