不同腐殖酸复合肥施用量对辣椒产量及其养分利用率的影响

试验研究不同腐殖酸复合肥施用量对辣椒产量及其养分利用率的影响结果表明 ,随施肥量的增加而辣椒叶片N、P、K累积量逐渐增大 ,果实N、P、K累积量呈二次抛物线趋势变化 ,且施肥量过大时不利于营养元素向果实中的转移。肥料生产效率及N、P、K养分利用率均随施肥量的增大而降低 ,肥料对辣椒产量的贡献率以及辣椒产量随施肥量的变化与辣椒果实营养元素累积量变化趋势相一致

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 accumulations by the leaves of pepper are increased. The N, P and K accumulations by the fruits of pepper are described with quadratic parabola model. 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 consisted with that of nutrients accumulation by the fruits of pepper.