| The theoretic bas is and the technical guidance of the reasonable fertilizationfor potato were provided throughthe researchonthe effect of differen nitrogen, phosphorus and potassium fertilizations on biomass accumulation and yield of potato.on plastic film mulching contions in the dry mountain.The effect of 8 fertilizations (TreatmentOne: N (N50),P2O5;TreatmentTwo: N (N50), K2O;Treatment Three: P2O5，K2O; Treatment FourN (N50) P2O5，K2O Treatment Five N (N80)P2O5，K2O; Treatment six N P2O5，K2O; Treatment seven N P2O5 andCK) on the biomass accumulation and yield formation of potato-xiazhai65 was expermiented.The results show that compared common urea nutrient with slow-release urea, the rate increase 10.6%, 17.4%, which showing significant increase trend. the different periods of the release of slow-release nitrogen fertilizer increased in potato starch 27% than ordinary urea, reducing sugar content of potato was reduced by 52%, the application of slow-release nitrogen fertilizer helps to improve the yield and quality of potato. |
