随着科学技术的发展,N、P、K大量施用,平衡施肥已引起人们的重视。中微量元素因其量“微”成了被人们遗忘的“角色”。由于缺乏中微量元素表现出来的病状比N、P、K缺乏时更为复杂。所以中微量元素的缺乏更为普遍,问题更严重。农业的连年丰收,使农作物从土壤中夺走的中微量元素越来越多,土壤的缺素越来越严重。原有的中微量元素的平衡被打破,农作 With the development of science and technology, N, P, K are applied in large quantities, and balanced fertilization has drawn people’s attention. Because of its amount of trace elements “micro ” has become forgotten “role ”. Due to the lack of trace elements in the symptoms than N, P, K lack of more complex. Therefore, the lack of trace elements is more common, the problem is more serious. The harvest of agriculture year after year, so that crops from the soil more and more trace elements, the soil deficiency is more and more serious. The original balance of trace elements is broken, farming