During 4 years experiment for organic fertilizer on white tesselated soil, it have ridging fertilizer and raise output evidently, and raise crop output wich organtic fertilizer.

• 经连续四年定位试验，结果表明，在白五花土上施用有机肥，有明显的培肥增产效果，并随有机肥施用量的增加而增高。