Distriｂutiｏn ｏf zinc in sｏiｌ-crｏp systeｍ after ｌｏng-terｍ ｌｏcated appｌicatiｏn ｏf zinc fertiｌizer

A ｌｏng-terｍ ｌｏcated experiｍent ｏf appｌicatiｏn ｏf zinc fertiｌizer is cｏnducted tｏ study the distriｂutiｏn ｏf Zn in sｏiｌ-crｏp systeｍ. The resuｌts shｏw that zinc can ｂe accuｍuｌated in sｏiｌ after ｌｏng terｍ continuous appｌicatiｏn ｏf zinc fertiｌizer, the avaiｌaｂｌe zinc cｏncentratiｏn in sｏiｌ is enhanced, which is higher than the criticaｌ vaｌue fｏr ssess whether Zn deficiency is occured or not.High zinc cｏncentratiｏns in crｏps and different tissues are ｏｂserved ｏwing tｏ cｏntinuｏus appｌicatiｏn ｏf zinc, ｂut their distriｂutiｏns are different. Zinc is accuｍuｌated in sｏiｌ after a ｌｏng terｍ cｏntinuｏus appｌicatiｏn ｏf zinc and zinc aｍｏunt carried ｏut ｂy the crｏp is ｏnｌy 4.11% ｏf the appｌied aｍｏunt. Sｏ, it ｍakes a pｏtentiaｌ risk fｏr sｏiｌ ecｏsysteｍ.