Soil heavy metal pollution seriously endangers the soil ecological environment and food safety production. In this study. drip irrigation tests with four irrigation frequencies were conducted by controlling the lower limit of the soil matric potential (D1: −10 kPa; D2: −20 kPa; D3: −30 kPa; D4: −40 kPa). Through comparison with traditional surface irrigation. https://countryscenesaddleryandpetsuppliers.shop/product-category/bitless-bridles/