Efect of the application amount of humic acid compound fertilizer 0n the yield and nutrient utilization rate of pepper

The effects of different application amounts of humic acid compound fertilizer(HA)on yield and nutrient utilization rate of pepper(Capsicum frutescens L．)were studied．The results show that with the increase of fertilizer application，the N ，P and K accumulationsbythe leaves ofpepper are increased．TheN，P and K accumulations bythefruits of pepper are described with quadratic parabola mode1．Fertilizer production efficiency and nutrient utilization rate of N ，P and K are all decreased with the fertilizer application increasing ．The changeable tendency of yield of pepper with the fertilizer application and the contribution of fertilizer to pepper yield are cons isted with that of nutrients accum ulation by the fruits of pepper．