Abstract: In order to solve the problem of high fertilizer use and low nutrient utilization efficiency, to provide the basic knowledge for efficient fertilization in peanut production, in situ experiment was carried out to evaluate the effects of N, P and K fertilization on the growth and yield of spring peanut. Results showed that:the absence of N, P or K fertilization significantly decreased the biomass and yields, of which the absence of N and P fertilization mainly reduced the pods per strain, whereas the absence of K decreased the 100-pod weight significantly. Moreover, the contribution of N, P and K fertilization to the peanut yields were in the order of K > N > P. The yields of treatments-N(PK),-P(NK),-K(NP), 1/2P(NK)and 1/2K(NP)were 81.9%, 82.3%, 81.2%, 86.2% and 83.7% that of NPK treatment, the difference being significant. The yields of fertilization treatment were in the order of NPK > 2/3N(PK) > 1/2N(PK) > 1/2P(NK) > 1/2K(NP) > -P(NK) > -N(PK) > -K(NP), but the 1/2N(PK)and 2/3N(PK)treatments had no significant impact on yield. Under the fertilization rates of 180 kg/ha N, 90 kg/ha P₂O₅ and 90 kg/ha K₂O, the peanut yield reached to 4 590.6 kg/ha,and the soil apparent nutrient balances of N, P₂O₅ and K₂O were-9.4%, 109.5% and-36.9%, respectively. When considering about the soil supply of NPK, the actual nutrient balances of N, P₂O₅ and K₂O were 71.9%, 190.5% and 43.5%, respectively. Based on the facts that peanut was legume and the soil fertility conditions in peanut production area of Eastern Hebei Province were high available phosphorus and low available potassium, the techniques of efficient fertilization in peanut production were recommended as follows:reducing nitrogen and phosphorus fertilizers, and ensuring potassium fertilizer. The suitable application rates of N, P₂O₅ and K₂O were 67.5-90.0 kg/ha, 45.0-90.0 kg/ha and 45.0-90.0 kg/ha for basal fertilizers, respectively, for spring peanut production in Eastern Hebei Province.

Key words: Peanut, Fertilizer location, Nitrogen, phosphorus and potassium, Yield response

CLC Number: 

• S147.5