External and internal environments growing influence of heavy metal contamination, such as the use of materials that have been contaminated by heavy metals, make fertilizer. Or organic fertilizers.
Environmental sources of external and internal cultivation influencing contamination of heavy metals, such as utilization of raw materials contaminated with heavy metals or organic fertilizer, fertilizer.
external and internal environmental influences on plantations of contamination of heavy metals such as the use of raw materials that have a heavy metal contamination, and it is a fertilizer or cattle manure