1. Nā waeʻano o nā mea hoʻomomona hoʻokuʻu ʻia ʻO nā ʻāpana nui o nā mea hoʻomomona kemika o Kina, ʻo ia nā mea kanu nitrogen, phosphorus fertilizers, potash fertilizers, compound fertilizers, a me microbial fertilizers. I waena o lākou, ʻo ka nitrogen fertilizer ka ʻano nui loa o ke kemika ...
Heluhelu hou aku