頁籤選單縮合
題名 | 洋蔥苗齡與結球關係之研究=A Study on the Age of Seedling in Relation to Bulbing of Onions |
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作者姓名(中文) | 郁宗雄; 曾紹均; | 書刊名 | 中華農學會報 |
卷期 | 56 民55.12 |
頁次 | 頁35-40 |
關鍵詞 | 洋蔥苗齡; 結球; |
語文 | 中文(Chinese) |
中文摘要 | (一)本研究為明瞭洋蔥之不同苗齡,對於苗體發育、植株發育及結球現象之影響。 (二)自播種至定植期之苗齡,分為25天苗、30天苗、35天苗、40天苗、45天苗、50天苗、55天苗、60天苗八種處理。 (三)苗齡與苗體發育之關係:1. 苗體隨苗齡之增加而增大,其中尤其根數之增加甚為顯著。是為影響將來植株發育及結球現象之重要因子。 2. 苗體之發育與播種其亦有關係,換言之?與溫度有關。過於早播時(高溫時)或過於晚播時(低溫時),苗體發育較慢。 (四)苗齡與定植後植株發育之關係:1. 苗齡愈小,移植時根部斷損數愈少,定植後仍迅速發根回復生長勢力,故植株開始發育亦愈早,且因定植後愈早獲得充分之植距,可供根部發育吸收養分,有助於植株之提早生育及促進結球。2. 苗齡愈小,?定植愈早時,定植後因適溫之關係,植株發育較快,因此達到結球條件時,植株已較大,故將來能結大球。 (五)苗齡與結球之關係:1. 苗齡愈小,?定植愈早時,結球期亦愈早,因此成熟期亦愈早,鱗莖亦愈大。苗齡大小影響鱗莖之大小,尤以晚播時為著,?晚播時,苗齡小時定植,產量尚不致大減,但苗齡大時定植,產量?大減。2. 分球率以45天苗最低,苗齡愈大或愈小時,分球率均愈增加,其增加幅度,尤以早播時為甚。 (六)30天左右之苗可謂之幼齡苗,40天左右之苗可謂之壯齡苗,55~60天苗可謂之老齡苗。 |
英文摘要 | The purpose of this study is to ascertain the effects of different seedling age on the seedling developing, plant growing and bulbing of onions. The seedling age from the sowing time to transplanting was divided into 25, 30, 35, 40, 45, 50, 55 and 60 days respectively. Those were used as the planting materials for trial. Seedling age in relation to seedling developing: (1) As the age of seedling rose, the developing of seedling would be promoted and the number of roots was also increased significantly, those were the main factors affecting the plant growing and bulbing afterwards. (2) The seedling developing was also in relaiton to sowing date or temperature. As the sowing date was preceded (in higher temperature) or postponed (in lower temperature) to some extent, the seedling developing would be rather slow. The seedlking age in relation with plant growing after transplanting: (1) As the younger seedling was transplanted, the fewer wound of root and the quicker recovery of plant vigour. It is earlier to get sufficient space and untrition, the plant growing and bulbing will be promoted. (2) When the younger seedling was transplanted, the quicker plant growing in suitable temperature we had, and the larger plant or bulb we obtained. Seedling age in relation to bulbing: (1) The younger seedling was adopted as the planting materials, the earlier maturity and the larger bulb we got. As the sowing time was postponed to some extent, the effects of seedling age on bulb size would be significant, otherwise the yield was also reduced when older seedling transplanted in the field. (2) The seedling of 45 days old was the lowest percentage of bulb divition. Either the younger of the older seedling we transplanted, the higher bulb division will be attained, especially it is significant the earler the sowing time. The seedling are classified according to the seedling age, i.e. the seedling was planted about 30 days we called young seedling stage, planted about 40 days called strong seedling stage and planted about 55-60 days, called the old seedling stage. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。