Effects of Application of BR Fertilizer on the Yield,Quality and Economic Benefits of Citrus

摘要

The effects of four different fertilization treatments [i.e.,Conventional fertilization,45% imported compound fertilizer,Sacofu compound fertilizer(N-P2O5-K2O=20-10-10),BB fertilizer for citrus(N-P2O5-K2O=19-8-13)]on yield,quality and economic benefit of Newhall navel orange were studied through three-year field plot experiment.The results showed that compared with conventional fertilization treatment,the application of Citrus BB fertilizer could not only increase the yield of Newhall navel orange by 13.65%,increase the soluble solids(TSS)content by 51.50%,soluble sugar(WSS)content by 56.64%,vitamin C(Vc)content by 8.87%,reducing the titratable acid(TA)content by 22.83%,increase the solid-acid ratio of navel orange fruit by 96.31%,sugar-acid ratio by 102.97%,but also enhance the economic benefit by 15496 yuan/hm~2.Therefore,the special BB fertilizer for citrus is suitable for further popularization and application in citrus orchards on hilly red soil hills in Fujian Province and even in southern China,where the climate and soil conditions are similar to those in Fujian Province.