頁籤選單縮合
題 名 | 黃麻播種期對於其種子產量之影響研究=Study on the Effect of Sowing Date upon Seed Yield of Jute |
---|---|
作 者 | 戴常智; 季景元; 李雨霖; 周學淳; | 書刊名 | 中華農學會報 |
卷 期 | 41 民52.03 |
頁 次 | 頁52-62 |
關鍵詞 | 黃麻; 播種期; 種子產量; |
語 文 | 中文(Chinese) |
中文摘要 | (一)本試驗於46~47兩年,同時在嘉義及屏東兩地舉辦,目的在研究黃麻採種與期播種期間之關係,試驗結果,以5月中旬至6月中旬間播種之採種量最高,4月及6月下旬至7月上旬雖亦可獲得較高之採種量,惟年度間常有相當之變幅,有失穩定,早於3月播種之黃麻,亦不能生產較多之種子。 (二)嘉義地區在7月中旬及屏東地區在8月上旬播種,仍可獲得相當之種子產量,且年度間之表現,亦極為安定。黃麻採種最遲之播種極限,嘉義地區約在8月下旬至9月上旬,屏東則在9月中旬至下旬之間。 (三)黃麻種子產量,與其單株蒴果數之間,有高度之正相關關係。 (四)經移栽之黃麻,種子產量與其同期之直播麻株相若;扦插採種單株採種量,可較適期播種知留株黃麻為高,惟因其蘇活情形,致影響其單位面積產量。 (五)黃麻開花及蒴果成熟期間之溫度,惟影響不同播種期間黃麻種子產量懸殊之基本因素,颱風及雨量分佈則為造成較早播種,黃麻種子產量年度間變差之原因。 |
英文摘要 | Experiments were carried out in 1957 and 1958 at 2 different locations, in Chiayi and Pingtung in order to determine the most appropriate time of planting of jute for seed collection. Sowings were made from early April to late October in 1957 and from late March to early September in 1958. Treatments of transplanting jute with seedlings and of apical cuttings were arranged for test along with above sowings at Chiayi Plot. Results showed that sowings made around April to June could all give a higher yield of seed, but yield obtained from those sowing dates around mid-May to mid-June seemed to be more stable in different years. Jute sown in March would not yield much seeds, while later sown after August, particularly in Chiayi, showed a sharp drop in seed yield. The latest sowing time for seed collection of jute appeared in early September in Chiayi and from late September to early October in Pingtung. The variation of jute seed from different sowing dates in different years was mainly affected by weather elements in flowering and fruiting stages. The decrement of jute seed yield sown after July was mainly due to the drop of temperature. Typhoon and rainfall were considered to be the influential factors causing the lower seed yield of jute sown in March and the fluctuation of seed collected between years sown in April and early May would also refuned to be effect of the same weather factors. Number of fruits per plant was closely correlated with seed yield of jute. A high rate of positive correlation existed between these two characters was from 0.7208 to 0.9961 through statistical analysis. The trends of development of jute plant and seed yield from different sowing dates were not corresponced each other. Jute plant sown in April gave the tallest stalk. The development of jute would be retarded due to the shortening of vegatative growth as a result of delaying be sowing date. Jute plants sown later than early Auguest would need a longer period to ripen its fruits. Jute to be transplanted could also gave a normal yield of seed, but its flowering date was several days later and development a little retarded as compared with that not be transplanted and sown on the same date. Aprical cuttings of jute had displayed a very good seed productivity. Nevertheless, good standing of cuttings was hard to keep from ordinary cutting method. Consequently, the unit yield of seed obtained from suttings might be lower than from plants sown around May to June. |
本系統中英文摘要資訊取自各篇刊載內容。