Abstract:

The aim was to improve soil nutrient and its application to eggplant, meet eggplants nutrient need, and ind out the optimal fertilizer formula for high output eggplant production. ‘Nong Fu 3’ was used as material, “3414” designing experiment and14 treatments with 3 replications were carried out. The experimental results showed that fertilize could improve eggplant output remarkable. N2P2K2 treatment’s yield was highest among the fertilize treatments. Treatments without or less applied any one of the three nutrients: nitrogen, phosphorus, potassium could make yield decreasing in different level, while nitrogen application was the most important yield formation factor. The insufficiency of nitrogen, phosphorus, potassium application made eggplant fruit decreasing. Nitrogen, phosphorus, potassium applied rates enhanced eggplant nutrient content and accumulation significantly, but nutrient allocation proportion decreased in the fruit. The mathematical model between eggplant and nutrient applied rates showed that the optimal nutrient application was: N:P2O5:K2O=1:0.55-0.83:0.63-0.84, or N:P2O5:K2O=392-433:240-243:271-330 kg/hm2.