An Experiment on the Method of Application of Urea on Rice
Other Title
尿素肥料施肥法試驗成績(第二報)
Journal
農業研究
Journal Volume
9
Journal Issue
2
Start Page
20
End Page
31
Date Issued
1960-09-03
Date
1960-06-03
Author(s)
L.T. Lee
C.T. Lin
K.C. Lin
S.C. Hsu
李蘭帝
林金燦
林國謙
徐水泉
Abstract
1. Irrigation within 6 days after the urea application has no significant influence on its availability so long as the deep placement is concerned.
2. Deep placement is the most essential in the application of urea, particulerly when the irrigation has been delayed.
3. Part of the urea used in top-dressing once or twice 20-40 days after the transplantation may increase the paddy yield significantly, neverthless, mixing with soil is not to be overlooked.
4. Balling the urea with some clay soil (urea soil, 175:1000) is the most effective method of application which increase the paddy yield by about 9% as a general average.
5. Urea does not differ greatly from the ammonium sulphate in its availability, however, in some experimental data, ammonium sulphate is found to be more effective.
1. 只要做深部施肥，施肥後的灌溉時期在 6 天內不致有顯著影響。
2. 深部施肥是尿素施肥中最重要的因素，在延遲施肥後灌溉的場合尤須遵行。
3. 部份的尿素用於追肥仍有功效，但須與土壤充分混合。
4. 尿素作為團球使用（混合比為尿素175對土壤1000），為尿素施肥法中最有效的雞比通常使用法平均增產9%之效果。
5. 尿素與硫酸銨不見有顯著差異，在少數成績中，仍有硫酸銨較優之趨勢。
Publisher
農業試驗所
Type
journal article
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