施用微量元素同施用三要素一样,都受限制因子律和最小养分律的原则所支配。因此,调查研究土壤中微量元素的含量与分布,是推广应用微肥中的一项重要工作。钦州地区在开展第二次土壤普查时,从各县市的土壤分层样本中选取536个进行光 The same applies to the three elements as applied to trace elements, subject to the rules of the limiting factor law and the law of least nutrients. Therefore, the investigation of the content and distribution of trace elements in the soil is an important work to promote the use of trace fertilizers. In carrying out the second soil survey in Qinzhou, 536 light samples were selected from the soil samples of the various counties and cities