Comparison of the Effect of a Compound Fertilizer blended with Muriate, Sulphate of Potash and for Potato yield

감자에 대(對)한 염화가리(鹽化加里)·황산가리(黃酸加里) 및 감자용(用) 시제복비(試製複肥)의 비효(肥效)에 관(關)한 연구(硏究)

The experiments were conducted in order to evaluate the effect of a compound fertilizer for application of potato plants (Sumi) which were prepared by the Kyonggj Chemical LTD. The results were summarized as follows; 1. Comparing with the plot of 12kg/10a muriate of potash plot, the potato yield of compound fertilizer, double rate of potassium sulfate and normal rate of potassium sulfate plots were increased in order to 44%, 7% and 6% respectively. The yield of potato at the compound fertilizer were significantly higher than that of double rate of potassium sulfate, but the latter yield was lower that of control. 2. The yield of potato were to exeeding of final tuber on June 25, which was twelve day earlier than the actual harvest the application of the compound fertilizer may make possible to harvest potato eariler than normal season and benefit fammers which better economic return. 3. Manufacturing it with granular form at diammonium phosphate, ammonium sulfate and potassium sulfate as majour source materials and having little urea contents, the compound fertilizer raised higher the emergence rate of potato plant than the other fertilizer were promoted the early plant growth, and kept potato plants comparatively healthier than the other fertilizer even at later stage of plant growth.

감자용(用) 시제복비(試製複肥)의 비효(肥效)를 황산가리(黃酸加里) 및 염화가리(鹽化加里)와 비교(比較)하기 위(爲)하여 감자품종(品種) "수미(秀美)"를 공시(供試)하여 시험(試驗)을 실시(實施)하였으며 그 결과(結果)는 다음과 같다. 1. 감자복비(複肥), 황산가리배량(黃酸加里倍量), 황산가리(黃酸加里)는 염화가리구(鹽化加里區)에 비(比)하여 각각(各各) 44.7 및 6%를 증수(增收)하였다. 감자복비(複肥)는 황산가리(黃酸加里) 배량(倍量)보다도 현저(顯著)한 증수(增收)를 가져 왔으나 황산가리배양구(黃酸加里倍量區)의 수량(收量)과 무가리구(無加里區)의 수량간(收量間)에는 유의차(有意差)가 없었다. 2. 감자복비(複肥)는 6월(月) 25일(日)에 벌써 수확기(收穫期) 수량(收量)의 80% 이상(以上)에 다달아서 조기(早期) 수확(收穫)을 가능(可能)케 할 수 있었다. 3. 입상(粒狀)이고 요소함량(尿素含量)이 적은 감자복비(複肥)는 인산(燐酸) 2암모니아, 유안(硫安), 황산가리(黃酸加里)를 주원료(主原料)로 하여 만든 비료(肥料)로서 감자의 출아율(出芽率)을 높이고 초기생육(初期生育)을 촉진(促進)했으며 수확기(收穫期)에도 타비료(他肥料)에 비(比)하여 경엽(莖葉)을 건전(健全)하게 유지(維持)하였다.