|Title:||化學藥劑對龍眼開花之影響||Other Titles:||Effects of Chemicals on Flowering in Longan||Authors:||顏昌瑞
|Keywords:||龍眼;開花;氯酸鉀;Longan;Flower initiation;Potassium chlorate||Issue Date:||Jun-2001||Publisher:||臺灣園藝學會||Journal Volume:||47||Journal Issue:||2||Start page/Pages:||195-200||Source:||中國園藝||Abstract:||
Alternate bearing is a serious problem in longan production in Taiwan. This paper describes the method developed to overcome the alternate bearing by chemical application. The method can control logan flowers as required and produce fruit all year round. The gunpowder of firecracker applied to soil 2/3 of canopy from trunk could induce flower initiation in different time, locations and varieties. The treatment could induce 39.8% and 75% of flower in May and July respectively. Further experiments indicated that potassium chlorate is only effective ingredient to force flower in longan in this treatment. Any chemical combined with potassium chlorate studied can induce 60% of flower on the tree in average. The effects of flowering were not affected by stage of leaf development. The flower percentages were not significantly different between 400 and 800 grams of potassium chlorate in trees with 6m of canopy diameter. However, increase of chemical application might increase the flower in longan. The effect was decreased in older and larger tree, which roots were deeper and is more difficult for chemical penetration as well. The results indicated that the flower initiation is irrelative to temperature and leaf development. The flower can be induced by chemical application from root. The research also indicated that flower forcing and season control in longan is possible by low cost chemical.
|Appears in Collections:||園藝系|
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