生态学家进行土壤肥力测试。温室里，身穿白大褂的成年生物学家手持试管、平板电脑，检查种植的蔬菜中是否含

sts take soil fertility test. Portrait of adult biologists in white coats with a test tube and a tablet inside a modern greenhouse, examining grown greens for the presence of heavy metals. Healthy eating concept. Modern agriculture. Growing herbs, dill, lettuce, parsley, basil in a greenhouse. High quality FullHD vertical footage.

光厂(VJshi)视频提供生态学家进行土壤肥力测试。温室里，身穿白大褂的成年生物学家手持试管、平板电脑，检查种植的蔬菜中是否含视频素材下载，适用于农业，转基因，科学实验，生物学家，Stem教育等主题的内容创作。

作者署名：Aliaksandr Sianko/Getty Images/华夏视觉