Abstract:

In order to guide the scientific and rational fertilization of fresh corn in Wenzhou City and improve the production efficiency, the “3414” field fertilizer efficiency test was carried out in this study. It was found that the key fertilizer factors affecting the yield were different under different soil conditions, and it was of great significance to carry out soil testing and formula fertilization of fresh corn. Soil organic matter content plays an important role in ensuring the basic yield and improving the yield, and special attention should be paid to the combined application of organic fertilizer and ordinary chemical fertilizer in production. The efficiency of fertilizer application in this region is high, but in the actual production, it is necessary to avoid yield theory, and it is necessary to pursue the maximization of income and reduce the amount of fertilizer under the condition of ensuring the best income level. According to the model, the maximum benefit values per 667 m² of the two experimental sites in this study could reach 3 285.59 and 3 129.29 yuan, respectively, and the optimal fertilization rates of nitrogen, phosphorus and potassium in Lucheng District were 22.40, 15.56 and 26.68 kg, and the optimal fertilization rates of nitrogen, phosphorus and potassium in Wencheng County were 26.25, 15.98 and 19.50 kg. Combined with the soil fertility, on the whole, the application of N 25 kg, P 15 kg and K 25 kg per 667 m² in Wenzhou area, that is, N∶P∶K is 1.67∶1∶1.67, which has certain guiding significance as the basic fertilization rate.

Key words: fresh corn, soil testing and formula fertilization, yield, income