The physical characters of granular complex fertilizer is improved by adding organic material, and so the fertilizer has some physical and biological slow-release effect.
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。
The physical characters of granular complex fertilizer is improved by adding organic material, and so the fertilizer has some physical and biological slow-release effect.
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。
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