|Title:||鳳梨園更新老株處理試驗||Other Titles:||Experiment on the Treatment of Old Plants of Pineapple Orchard||Authors:||黃榮瑞
|Keywords:||掘出;綠肥作物;鳳梨萎凋病;品質;dig;green manure;pineapple wilt;quality||Issue Date:||Nov-1969||Publisher:||臺灣園藝學會||Journal Volume:||15||Journal Issue:||3-4||Start page/Pages:||59-67||Source:||中國園藝||Abstract:||
This experiment was carried out both at this Experiment Station and Tainan District Agricultural Improvement Station since 1966. The removal of and treatment of Old pineapple plants in February and September, 1966 respectively. The new pineapple seedlings were planted in September with five different treatments, arranged in random with three duplications. Till the seedlings grow just one year, the one-half of the plots use 1% Calcium Carbide (Ca C2) as the growth promoting substance to promote the blooming and heading of Spring crop of pineapple
1. The five different treatments of Old pineapple plants are as follows;
(1) To dig the Old pineapple plants in the spring and then buried in the depth of 30 cm, below the horizon.
(2) After dug the Old pineapple plants, cut into pieces and then covered on the land before the planting of seedlings in autumn.
(3) Dug the Old pineapple plants and then plant the green manure crops on the same land.
(4) Before the planting of seedlings, the Old pineapple plants Should be burned, and buried immediately lute the soil of about 30 Cm. depth below the horizon.
(5) Before the planting of seedlings, dug the Old pineapple plants and removed them away.
2. The growth of the new pineapple plants:
The new pineapple plants grew well in the Old plants removed land, except the treatments 5 and 2, they grew bad, but it showed no significant difference.
3. The Outbreak of Pineapple wilt:
Concerning the occurrence of wilt, the treatment 4 appeared seriously among them, but the treatment 3, the wilt percentage was lowest, their difference was 4.3 and 5.055, being much above 155 level of statistically significant. While the wilt percentage of treatment 1 was also low. It may be concluded that the renewal of Old pineapple plants of the pineapple orchard, however, either we dug the Old plants in spring, buried into the land, Preparation of the soil, then plant the green manure crops, (Treatment 3), or we dug the Old plants in spring and buried into the land till the autumn planting (treatment 1), the wilt would be less appeared.
4. The yield of fruits:
No matter the fruits of spring crops or summer crops of pineapple, the treatment 1 gave the highest yield, weighed 1,961 kg.; followed was treatment 3, 1,899 kg. in weight; the third was the treatment 5, weighed 1,695 kg; and the tratment 4 and treatment 2, only 1,635 and 1,587 kg. respectively were the lowest among them. The difference was much above 5% or 1% level of statistically significant With respect to the yield of fruits it was shown that the treatments 1 and 3 were increased in production about 15% and 12% than the treatment 5, If the former treatments compared with treatments 4 and 2, they increased in production about 15.5%-22.0%
5. The Quality of fruits:
In general we considered the deep yellow color of the pineapple flesh is the best color. In this experiment the fruits of treatments 3 and 1, were largely appeared that color, but the size and sugar content (measured by Brix hydrometer) of the center part of fruits have no signigicant difference The acidity of treatment 4 was apparently higher than other treatments.
This Experiment was supported by the National Council on Science Development.
|Appears in Collections:||熱帶果樹系|
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