Soil Testing and Fertilizer Recommendation of Double Early Rice “3414”

[Objective]The paper was to search the rice fertilization formula suitable for Lujiang County.[Method]Through 3414 field fertilizer efficiency test on early rice,the function model of N,P,K fertilizer effect for high yield cultivation of double season rice was explored in the paper,and the best rice fertilization formula was selected.[Result]Yield of early rice had obvious relationship with application amount of N,P,K fertilizer,and the optimum yield fertilization formula was as follows:pure nitrogen 159 kg/hm2,P2O5 81 kg/hm2,K2O 174 kg/hm2.The optimum fertilizer application amount was estimated as follows:nitrogen fertilizer 202.50 kg/hm2,phosphate fertilizer 90.00 kg/hm2,potassium fertilizer 135.00 kg/hm2.Compared with the fields without application of fertilizer,the yield increased by 74.43%,and the growth was significant.[Result]The results provided theoretical and practical basis for scientific and reasonable fertilization on double season rice in Lujiang County.