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有机－无机型复合肥，是消纳农业有机废弃物、提高有机肥使用价值的一种新型肥料。经试验比较，挤压式造粒工艺不受有机原料比例影响，较适合于有机－无机型颗粒肥生产，在本试验中，有机原料在１０％～４０％比例范围内，均可用挤压方式实现造粒；有机原料比例越大，颗粒肥的总养分含量越低，但肥料中有机养分比例、有机质含量随之提高；有机原料的加入能提高和改善颗粒肥的物理性状，且能使颗粒肥具有生物和物理性的缓效作用。
Organic - inorganic fertilizer is to absorb agricultural organic waste, improve the use of organic fertilizer, a new type of fertilizer. The experimental comparison, extrusion granulation process from the proportion of organic raw materials, more suitable for organic - inorganic fertilizer production, in this experiment, the organic raw materials in the range of 10% to 40%, can be squeezed Way granulation; the greater the proportion of organic raw materials, the lower the total nutrient content of granular fertilizer, but the ratio of organic nutrients in fertilizers, organic matter content increased; the addition of organic raw materials can improve and improve the physical properties of granular fertilizer, Particle fertilizer with biological and physical slow-acting effect.