The delay time of piezometer is mainly related to soil quality.

Does the subject want to ask, "What is the main relationship between the delay time of piezometer and soil?" Permeability coefficient.

1. According to the knowledge of written test of water conservancy institutions in Laoting County in 2023, the delay time of piezometer is mainly related to the permeability coefficient of soil.

2. Laoting County belongs to Tangshan City, Hebei Province, located in the southeast of Tangshan City, surrounded by Jingtang Port and adjacent to Caofeidian, Tangshan. The land area of the county is 1308 square kilometers, with 950,000 mu of cultivated land and a population of 500,000.