CAJ | 학술논문

为了解汨罗市红壤土的肥力状况和红薯的需肥规律，对红薯氮磷钾肥料效应进行了研究，结果表明：红壤土种植红薯的最佳施肥量为N 9.05 kg/667m2、P2O56.48 kg/667m2、K2O 10.50 kg/667m2，最佳经济产量为2025.3 kg/667m2。红薯最高产量时N、P2O5、K2O的配比是1：0.79：1.33，这符合红薯喜钾特性。
위료해골라시홍양토적비력상황화홍서적수비규률，대홍서담린갑비료효응진행료연구，결과표명：홍양토충식홍서적최가시비량위N 9.05 kg/667m2、P2O56.48 kg/667m2、K2O 10.50 kg/667m2，최가경제산량위2025.3 kg/667m2。홍서최고산량시N、P2O5、K2O적배비시1：0.79：1.33，저부합홍서희갑특성。
To further understand the situations of red soil fertility and the fertilizer requirement laws of sweet potato in Miluo city, the fertilizer effects of nitrogen, phosphor and kalium to sweet potato were studied. The results indicated that the optimal fertilizer rate for nitrogen, phosphor and kalium was 116.55 kg/hm2, 72.60 kg/hm2 and 109.50 kg/hm2, respectively; the best economic yield was 29 470.5 kg/hm2. The yield of sweet potato was the highest when ratio of N to P2O5 to K2O was 1:0.79:1.33, which accord with the potassium-like character of sweet potato.