Data from: Understanding the role of pig manure, rice straw and calcium carbonate on the cadmium pollution in soil-wheat system

To explore the specific effects of pig manure and rice straw on
cadmium-contaminated soils and the effect of different mass fractions of
calcium carbonate on cadmium efficacy, a pot experiment was conducted with
different rates of pig manure (RS), rice straw (PM) and calcium carbonate
(CC). The results showed that pig
manure addition increased the soil HA/FA ratio, thereby
reducing the available Cd. The addition of calcium carbonate
increased the soil pH and reduced the available Cd, The
addition of pig manure and calcium carbonate significantly reduced the Cd
content of wheat grains by 51.96% and 45.95%, respectively, at 3% and 5%
application rates. Rice straw application reduced the soil pH, improved
the soil Cd availability, and increased the accumulation of
Cd in wheat grains. Compared with that in the control, the grain
biomass increased significantly with 3% pig manure and 3% rice straw
application, and the grain biomass increased significantly, by 58.86% and
39.11% and 93.3% and 75.08%, respectively, in 2020 and 2021. With the
application of calcium carbonate, the grain biomass of wheat first
decreased and then increased. Additionally, the grain biomass
significantly increased by 26.36% and 71.22%, respectively, at
the 5% calcium carbonate application rate. Therefore, high application
rates of pig manure (3% and 5%) have potential application in the safe
production of wheat in Cd-contaminated soils.