近几年,我国的液体肥已经从单一的生长素类和微量元素类液肥走向开发常量元素液体肥。但我国开发生产的常量元素液肥大都是以溶解固体肥生产的混合肥,由于受溶解度的限期其中磷、钾含量较低,为了达到国家对固体复合肥含量的最低要求即:氮、磷、钾、≥25％的标准,一般是以溶解大量的尿素用氮来充数。在我国多数 In recent years, China’s liquid fertilizer has been from a single auxin and trace element liquid fertilizer to develop a constant element liquid fertilizer. However, the development and production of our country’s major elements of liquid fertilizer are mostly solid fertilizer fertilizer dissolved, due to the solubility of the deadline where the phosphorus and potassium content is lower, in order to achieve national minimum requirements for the content of solid compound fertilizer namely: nitrogen, phosphorus, potassium , ≥ 25% of the standard, usually to dissolve a large number of urea nitrogen filled. Most in my country