頁籤選單縮合
題 名 | 稻田轉作玉米栽培法之研究(3):飼用玉米之肥料施用量及其效應 |
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作 者 | 黃勝忠; 徐國男; | 書刊名 | 臺中區農業改良場研究彙報 |
卷 期 | 10 1985.06[民74.06] |
頁 次 | 頁42-50 |
分類號 | 434.147 |
關鍵詞 | 玉米; 肥料; 施用量; 栽培法; 飼用; 稻田轉作; |
語 文 | 中文(Chinese) |
中文摘要 | 為探討飼料用玉米台農351號的肥料適當用量及氮、磷、鉀、鎂之吸 收及其效應,於73年秋作在台中縣外埔及彰化縣二林進行試驗;氮、磷、鉀、 鎂用量各以3-3-3-2等級之不完全組合,共計8處理。試驗結果顯示,低氮 量與缺磷或缺鉀均會使玉米子實顯著的減產。又因試區土壤無缺鎂現象,施鎂的 效果不顯著。稻田轉作玉米每公頃宜採用氮素150∼200公斤,磷酐90公斤,氧 化鉀50∼100公斤較為理想。玉米之子實產量與幼植株(播種後35天)之磷含量 及吐絲期著果穗葉片之鉀含量呈極顯著正相關,此顯示磷肥對玉米初期生育頗為 重要,鉀肥的效應在抽穗吐絲期最為顯著,且與產量之關係密切。以玉米植物體 或葉片氮含量而言,皆與子實產量有關,即產量隨葉片氮含量之增加而增加,尤 其是吐絲期著果穗上葉片之全氮含量與產量之關係更密切。 |
英文摘要 | Field experiments were conducted at Erhlin (Changhua Hsien) and Waipu (Taichung Hsien) in the fall crop season, 1984 to study the effects of fertilizers N, P, K and Mg on the growth and yield as well as on the nutrient uptake of corn cv. Tainung No. 351. The results were summarized as follows: A significant reduction in grain yield was foung in the treatments of low rates of nitrogen, phosphorus and potassium. The effect of magnesium fertilizer on grain yield was not significant due to adequate magnesium content in the soil. The optimum rates of N, P2O5, and K2O for corn in paddy field were 150-200, 90, 50-100 kg/ha, respectively. Highly positive correlation between grain yield and P content in plant at the age of 5 weeks and K content in the ear-leaf at silking stage were observed. These results indicated that P uptake by corn during the early growth stage and K concentration in the leaves at silking stage played an important role on the grain production. Generally, the grain yield increased with the increase of N concentration in plant or leaf; i. e., nitrogen content in the ear-leaf at silking stage was closely associated with grain yield. |
本系統中英文摘要資訊取自各篇刊載內容。