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夏谷氮磷钾化肥用量与配比试验表明,在潮土、褐土、棕壤三种土壤上,豫谷1号与鲁谷5号亩产300～400公斤的氮磷钾最优组合为N_4P_4K_4～N_6P_6K_6;生产100公斤籽粒所需氮磷钾的比例约为1.7:1:1.5.
The results showed that the optimal combinations of N, P, K and K fertilizers of 300 ~ 400 kg per hectare of Yugu 1 and Lugu 5 were N 3 P 4 K 4 ~ N_6P_6K_6; The production of 100 kg of nitrogen, phosphorus and potassium required for the ratio of about 1.7: 1: 1.5.