Introduced are some problems concerning the design of compound phosphate fertilizer thick liquid pump in the light of its structure, hydraulic design, and sealing.

从结构型式、水力设计、密封型式等方面论述了磷复肥料浆泵设计的有关问题。

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Through the leaching experiment, this paper studied on the slowly releasing characteristics of lignin compound fertilizer which was made of ammonia products of ammonia sulfite pulp black liquid.

通过肥料的沙柱淋溶性试验，研究了以亚铵法制浆蒸煮废液氨解产物为原料研制的木质素肥料的缓释特性。

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The paper analyzes the main control of urea-based compound fertilizer the ratio of liquid urea and dry pow-der material.

分析了尿基复合肥中的关键控制，尿基与干粉物料的配比，详细介绍了双闭环比值控制系统的设计；

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