有机肥施用方式对柑橘园土壤肥力和柑橘养分、品质的影响

为提高上海崇明柑橘的品质和产量,研究了不同有机肥施肥量和施肥深度对柑橘园土壤肥力和柑橘养分、品质的影响.结果表明:与未施有机肥处理相比,施用有机肥可以不同程度地增加土壤中速效N、有效P和有效K的含量,最好的处理分别高出对照20.9％、24.9％和44.4％；并能提高土壤有机质的含量,最好的处理高出对照16.2％；同时减小土壤容重,降低土壤的pH,从而提高土壤肥力；施用有机肥可以增加土壤中微生物的数量,并且能提高柑橘叶片中全氮和全钾的含量,改善柑橘果实品质.

Effects of organic fertilizer application on soil fertility and leaf nutrients and fruit quality of citrus

In order to improve the fruit quality and yield of citrus in Chongming County of Shanghai, the effects of organic fertilizer rate and depth of manuring on soil fertility,and leaf nutrients and fruit quality of citrus were investigated.The results showed that in comparison with no application of organic fertilizer(CK),application of organic fertilizer could increase the readily available N,available P and available K contents of soil,and the contents in the best fertilizer treatment were respectively 20.9%,24.9%and 44.4%higher than those in CK;application of organic fertilizer could also increase the organic matter content of soil by 16.2%in the best fertilizer treatment,and decrease the bulk density and pH of the soil,thus improving the soil fertility.In addition,application of organic fertilizer could increase the quantity of soil microorganism and the total N and total K contents in citrus leaves and improve the fruit quality of citrus.