Vegetation is an important component of stormwater control measures, as vegetation can reduce erosion and runoff. While grass is typically used in stormwater control measures, wildflowers can be planted to reduce maintenance and improve pollinator habitat. Previous studies have established that tillage followed by establishment of a vigorous vegetation stand can increase infiltration relative to compacted soils. Compost can also improve soil physical properties and fertility. The goal of this study was to evaluate potential improvements in infiltration using tillage together with compost and either grass or wildflowers. Wildflowers or grass were planted on tilled soil with or without compost at three sites in North Carolina. Bulk density, infiltration rate, root mass density, and penetration resistance were measured every 6 months over a 30‐month period. A subset of plots received wheel traffic from a mower. Compost application reduced bulk density compared to tillage alone. Compost improved infiltration at two sites (46%–50%). Wildflowers improved infiltration at all sites (30%–43%) compared to grass. Few differences were observed in root mass and penetration resistance. Mower traffic reduced soil improvements more in grassed plots than wildflower plots due to higher mowing frequency. Results suggest compost and/or wildflowers together with tillage (at establishment) provide viable options to improve soil conditions and infiltration rate in construction impacted soils.

中文翻译：

---

野花和堆肥改良剂可以改善受施工影响的土壤的渗透

植被是雨水控制措施的重要组成部分，因为植被可以减少侵蚀和径流。虽然草通常用于雨水控制措施，但可以种植野花以减少维护并改善传粉媒介栖息地。先前的研究已经证实，与压实土壤相比，耕作后建立茂盛的植被可以增加渗透力。堆肥还可以改善土壤物理性质和肥力。本研究的目的是评估使用耕作结合堆肥和草或野花对渗透的潜在改善。在北卡罗来纳州的三个地点，在有或没有堆肥的耕种土壤上种植了野花或草。在 30 个月的时间内，每 6 个月测量一次堆积密度、渗透率、根质量密度和渗透阻力。一部分地块接收来自割草机的车轮交通。与单独耕作相比，堆肥施用降低了堆积密度。堆肥改善了两个地点的渗透（46%–50%）。与草相比，野花改善了所有地点的渗透（30%–43%）。在根质量和渗透阻力方面几乎没有观察到差异。由于割草频率较高，割草机交通对草地地块土壤改良的影响比对野花地块的影响更大。结果表明，堆肥和/或野花与耕作（在建立时）一起提供了改善土壤条件和受建筑影响的土壤渗透率的可行选择。