河海混成 논土壤의 養分收支에 관한 연구 (Study on Nutrient Balance in Paddy Field of Fluvio-Marine Deposit)

서지정보

· 발행기관 : 한국토양비료학회
· 수록지 정보 : 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer) / 35권 / 5호 / 253 ~ 263페이지
· 저자명 : 유철현, 양창휴, 강승원, 한상수

초록

벼 재배시 시용한 비료와 자재양분의 이동과 흡수에 미치는 영향을 구명하고자 전북통에서 동진벼를 공시하여 2개년간(1999∼2000)시험한 결과는 다음과 같다.
시험후 토양의 pH는 생우분 시용구에서 높아졌고 유기물, 인산, 규산, 칼리, 석회, 전질소함량이 증가하였고, 토층내로의 침투수중 무기태질소함량은 N H4 -N보다 N O3 -N함량이 월등히 많았으며 그 정도는 생우분시용구에서 높았으며, P O4 -P함량은 생우분시용구에서 타처리 보다 높았으나 K함량은 표준시비구에서 높았다. 벼 생육기간중 물의 소비량은 477mm였으며, 양분의 공급량과 소비량 중 질소는 무질소구, LCU20%감비구, 무비구에서 공급량보다 소비량이 많았으며, 인산의 경우는 무인산, 무비구를 제외하고는 공급량보다 소비량이 적었다. 또한 칼리는 모든 처리에서 공급량보다 소비량이 많았다. 양분의 침투수 중 시비질소는 진단시비, 표준시비+생우분+규산시용구에서 많았고 수확물의 질소회수율은 LCU 20%감비구에서 높았다. 시비인산의 침투율은 생우분시용구에서 많았고, 시비칼리는 LCU%감비구에서 많았다. 수도체 질소이용률은 LCU20%감비, 인산과 칼리의 이용률은 표준시비+규산시용 구에서 높았다. 쌀수량은 진단시비 대비 LCU20%감비＞표준시비+규산=표준시비+생우분+규산＞표준시비+생우분 순으로 높았다.

영어초록

To the for the effect of applied fertilizer and nytrients on uptake and transport for paddy rice, two paddy field trials were conducted with Dongjinbyeo in degenerated salt paddy field of Jeonbuk series from 1999 to 2000 After experiment, soil acidity, content of organic matter phosphate, silicate, potassium, calcium, and total nitrogen was increased by application of frdsh cattle manyre(FCM). Content of Nitrogen in soil layer leached inorganic nitrogen NO₃ was higher than that of NH₄ and was high in treatment of VCM. Content of PO₄ was higher in FCM than other treatments. But content of potassium was in high control. During the growth of rice plant, the amount of water conconsumption was 477㎜. The zmount of supplied nitrogen was high in treatment of no nitrogin(NN), 20% reduced application of LCU(LCU-20%), and no fertilizer. In case of phosphate, the supplied amount was more than the consuned amount with the exception of treatment "no phosphate(NP)and no fertilizer(NF)". In case of potassium, the consumed amount was more than the supplied amount in all treatments. The amountof applied nitrogen in the nutrient infiltrated water was high in treatment soil test(ST), C+FCM+Si(silicate) and the ratio of recovered nitrogin was high in 20% reduced application of LCU. The amount of applied phosphate in the nutrient infiltrated water was high in FCM and that of applied potassium was high in 20% reduced application of LCU. Nitrogen use efficiency of paddy rice was high in 20% reduced application of LCU and use efficiency of phosphate and potassium was high in C+Si(silicate). Grain yield of rice was high in order of 20% reduced application of LCU＞C+Si = C+FCM+Si＞C+FCM.

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