Soil zinc

is present in nature in a two-price state, the main zinc-containing minerals are flash zinc (zinc sulfide), followed by red zinc (zinc oxide), diamond zinc (zinc carbonate). Zinc-containing mineral decomposition products have a high degree of solubility, with two-price cations or one-price ions(ZnCl) ,(Zn(OH)


,

, Zn(NO3 )and other states are present in the soil, which are then absorbed and utilized by plants. However, the solubility of zinc is often reduced quickly due to factors such as soil
ac acid-base
degree, adsorption fixation,
organic
quality and interaction between elements. When

pH

a unit, the solubility decreases a hundredfold. Under reduced conditions, zinc is precipitated into zinc sulfide when hydrogen sulfide is present. All of this reduces the effectiveness of soil zinc on plants. Usually the amount of active zinc in the soil is only about one percent of the total zinc content. Zinc in soil can be distinguished into water-soluble zinc, transmorphic zinc, insoluble zinc and organic zinc. Water-soluble zinc is very small and is generally within

concentration

pppb. Substitute zinc consists of two parts, namely zinc ions and zinc-containing ions, the content of about 1to 10ppm

. Substitute zinc varies depending on the type and acidity of the extractor. Acid extractors extract more zinc. Zinc, which is effective for crops, is mainly transmorphic zinc.