Fertilizer Application and Its Applied Prospect in Hunan Province

Fertilizer application increased steadily in recent 10 years in Hunan province.Fertilizer input of Hunan province was 1.883 million tons in 2003,which equals to 260.0 kg/ha(deducting multiple cropping indexes),reaching middle fertilizer application level.But there are some problems such as imbalance among counties,higher in N proportion,lower in K proportion and irrational fertilizer structure in fertilizer application of Hunan province.Trend analysis showed that K-fertilizer proportion,high-nutrient and compound (or mixed) fertilizer were increase gradually.The fertilizer application in Hunan province will reach much higher level by the year of 2101,which will not beneficial to the release of fertilizer and do harm to environment.