本文介绍了三种快速预测畜禽粪便肥料成分含量的方法，包括比重计测定法、电导仪测定法以及近红外光谱分析法。

In this article, we review three rapid methods to predict manure nutrient content, including hydrometer, conductivity meter and Near Infrared Reflectance Spectroscopy.

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与比重计法测定结果的对比分析表明，显微图像分析法是可靠的。

Compared with the testing result of densimeter method, it is shown that the testing result of microscopic image analysis method is credible.

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