Effects of Mineral Elements and Organic Fertilizer on Yield and “blue chip” of Radish

In order to guarantee yield and avoid occurring " blue chip" of radish at the same time,the field experiment and different storage methods were used to study the effects of different mineral elements and organic fertilizer on yield and " blue chip" phenomenon of radish.The results showed that the NPK2(urea+calciummagnesia phosphate fertilizer+potassium sulfate)+chicken manure treatment gave the highest yield,151.67t·hm-2,significantly higher than that of NP(CK)treatment.In addition,the " blue chip" rate of radish of NPK1(urea+calcium-magnesia phosphate fertilizer+potassium chloride)and NPK1+ chicken manure treatment were20.0%and 16.7% respectively,and significantly higher than that of the treatment without applying potassium chloride.While refrigerated storage inducing the " blue chip" phenomenon of radish appeared earlier than normal temperature storage.The soil and plant samples analysis showed that the radish section pan-blue phenomenon maybe caused by the radish containing high Cu and Cl ions to form CuCl2which make radish section in light blue patches.Therefore,in order to guarantee the high yield and good quality of radish,avoiding the phenomenon of " blue chip",suggested that carrot planter don′t mixed application of organic manure and potassium chloride,select potassium sulfate as potassium fertilizer and combination fertilizer,urea+calcium-magnesia phosphate fertilizer+potassium sulfate+chicken manure,as fertilizer source for radishs.