- 作者： 蔡秀隆
- 作者服務機構： 國立屏東農業專科學校農藝科
- 中文摘要：
本研究採用紅豆（Phaseolus angularis）高雄選1號，於二期稻作收穫後，行不整地禾根栽
培（註1）。1981年10月8日在本校農場播種，1982年1月1日收穫。本試驗的目的在瞭解禾根
紅豆各生育時期的發育情形，植株各部生長特性的變化及其間的相互關係，建立基礎的研究資料
，以做為作物生理與栽培的參考。其結果如下：
1.株高、葉數、分枝數、莢數、葉面積指數（LAI）、營養器官乾物重均隨生長日數而增加
。在播種後50天亦即始花後17天時，達到最高，似為紅豆生長臨界點。
2.主莖的下位葉較早老化，中段的葉（第6葉）最晚落葉。分枝的生長較遲，其葉片之老化亦
較晚。
3.葉面積持續期（LAD）影響乾物質累積的大小，不同葉位的LAD反映該節位的種子收量
的大小。主莖中段葉的LAD高，中段節位的種子收量亦高。
4.平均淨同化率（NAR）與平均相對生長速率（RGR）隨生育日數的增加而遞減。為了因
應植株生理上的要求，有兩個升?，一個在始花期，一個在莢果急速生長期。葉面積比（L
AR）在始花後衰減。平均作物生長速率（CGR）隨生育日數而增加，至生育後期（播
種後64天）銳減，亦有兩個升?，一個在營養生長旺盛期，一個在莢果急速生長期。
5.生育初期乾物質主要由葉與主莖構成。葉在播種後50天以前其乾物重比（DWR）均在50%
以上，之後才減少。營養器官乾物的累積在始花（播種後30天）前緩慢增加，以後則急增。
生殖生長則在營養生長衰退時（播種後50天）始有明顯的增加。主莖上的光合物質有轉運的
現象，分枝則無。
6.種子收量與單株莢數、種子粒數、稈乾重有極顯著相關。種子收量以主莖者為主，但分枝的
種子收量亦有明顯的貢獻。r - 英文摘要： The azuki bean variety K.S.S.1 seedingon unfurrowing land after the second ricecrop was used in this study. The bean wasplanted on Oct. 8, 1981 in the farm of Ping-tung Institute of Agriculture and harvested onJan. 1, 1982. Plant samples were takenrandomly in the field at 7-day intervalstarting from sowing. All parts of plantwere investigated. The dry weight which wasobtained after the fresh material was allowedto dry at 80℃ for 48 hours in an oven. Thepurpose of this study was to understand thechanges of growth and development atdifferent growth stages and the relationshipsamong agronomic characters. The informationthus obtained will be used as references forcrop physiology and culture. The major resultswere as follow: 1. Plant height, number of leaf, number of branch, number of pod, LAI and the dry weight of vegetative parts increased with growth stage, peaking at 50 DAP (50 days after planting) while it was 17 days after the flower initiation, indicating that the length of day was the critical point for the growth of azuki bean. 2. Leaves at lower position on main stem were early and leaf at the middle (6th leaf) was the latest to senesce. Delayed senescence occurred in leaves on slowly- growing branches. 3. Dry matter accumulation is controlled by LAD. The LAD on different position reflected different seed yield. Leaves in the middle position had had high LAD, and thus its seed yield. 4. Both NAR and RGR decreased with gro- wth. It revealed two peaks of NAR and RGR, one at the flower initiation and one at the pod rapid growth stage. LAR declined rapidly after the initiation of flower. The CGR increased until 64 DAP (later growth stage) and then droped rapidly. It also possessed two peaks, one at the vegetative rapid growth stage and one at the pod rapid growth stage. 5. Most of the dry matter arose from leaf and main stem during the initial growth stage. DWR of leaf was always above 50% before 50 DAP and then decreased. The dry matter of vegetative parts increased slowly before flowering (33 DAP) and then increased rapidly, peaking at 50 DAP. The reproductive growth was not evident until the vegetative growth was decline from peak. There was a retrans- located phenomenon on main stem, but not on branch. 6. Seed yield was most the significant which positively correlated with pod/plant, pod weight/plant, seed number/plant and azuki bean straw/plant. The seed yield on main stem was the most important estimator for yield/plant. Seed yield on the branch had an evident contribution to yield/plant.
- 中文關鍵字： --
- 英文關鍵字： --
