頁籤選單縮合
題 名 | 綠肥對春作高粱生長影響之研究 |
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作 者 | 蔡宜峰; 黃勝忠; 賴文龍; | 書刊名 | 臺中區農業改良場研究彙報 |
卷 期 | 23 1989.06[民78.06] |
頁 次 | 頁11-20 |
分類號 | 434.157 |
關鍵詞 | 生長; 春作; 高粱; 綠肥; |
語 文 | 中文(Chinese) |
中文摘要 | 試驗分為不同綠肥作物與埃及三葉草配合石灰處理兩部分,以探討冬 季裡作綠肥對春作高粱生育及子實產量之影響,並研究掩施綠肥後土壤地力之變 化。試驗結果顯示,在酸性或鹼性土壤,埃及三葉草盛花期之青掩鮮重最高,可 達16.8 t/ha,優於紫雲英及油菜。而後作高粱子實產量亦以埃及三葉草處理區最 高。二年試作結果顯示,播種埃及三葉草對春作高粱的平均增產率約16.4%。在 酸性土壤播種埃及三葉草之前二週施用石灰3t/ha,可使埃及三葉草的青掩鮮重 增加43.3%,平均達到22.5 t/ha。而高粱子實產量亦以埃及三葉草配合石灰處理 區最高,平均增產率約24.2%,其次依序為單獨石灰區,單獨綠肥區及對照區。 在高粱子實產量指數與埃及三葉草的青掩鮮重之間有顯著的二次迴歸曲線相關 。掩施綠肥對土壤有機質含量略有增加且能緩和土壤pH值下降之趨勢。 |
英文摘要 | The field experiments of various treatments of green manures, milk vetch (Astragalus sinicus L.), Berseem clover (Trifolium alexandrinum), rape (Brassica campestris L.), and the treatment of Berseem clover with lime were conducted to study the effects of green manures on the growth and grain yield of spring sorghum (Taichung 5) and soil fertility. The result were summarized as following: In both acid and alkaline soils, the average fresh weight of incorporated Berseem clover was 16.8 t/ha, which was higher than that of milk vetch and rape. The grain yield of sorghum in the treatment of incorporated Berseem clover was the highest, and the mean increased rate was 16.4% in two years' results. In the treatment of Berseem clover with lime (applying lime two weeks before planting Berseem clover) in acid soil, the average fresh weight of Berseem clover was 22.5 t/ha, which was 43.3% higher than that of check. This treatment also had the highest grain yield of sorghum, and its mean increased rate was 24.2%. By multiple regression analysis, the relation between the grain yield of sorghum and the fresh weight of Berseem clover was statistically significant. The application of green manure could increase the soil organic matter slightly and could alleviate the soil pH decreasing rate. |
本系統中英文摘要資訊取自各篇刊載內容。