我国第一批采用田间密码试验和用户跟踪调查筛选出来的新型肥料产品被公布。用这些肥料作为全国农业技术推广中心的推广产品。 这次筛选的产品，全国农业技术推广中心首次采用了田间密码试验和用户跟踪调查方法。 被公布的新型肥料共有９个产品，包括有机复合肥、叶面肥、复混 The first batch of new fertilizer products that have been screened out by field test and user tracking survey in China was published. Use these fertilizers as a promotional product of the National Agricultural Technology Promotion Center. The screening of products, the National Agricultural Technology Promotion Center for the first time using the field of password test and user tracking methods. The new fertilizer has been announced a total of 9 products, including organic compound fertilizer, foliar fertilizer, compounding