瓊麻園雜草種類及施用殺草劑效果之評價
Other Title
Investigation of Weed Species and Evaluation of Different Herbicides on the Growth of Sisal Hemp in Field
Journal
中華農業研究
Journal Volume
31
Journal Issue
3
Pages
199-208
Date Issued
1982-09-04
Date
1982-09-04
Author(s)
胡敏夫
M.F. Hu
Abstract
自從人造纖維發明和取代部份之植物纖維用途後，瓊麻纖維之價格一落千丈，農民因無利可圖，未能如往年再僱工除草，於是麻園裡雜草叢生，威脅著瓊麻生長，遭致麻絲產量逐年降低，而不能充分供應國內需要。為要解決此問題，爰進行本計畫並於1977~1979 年問從事研究。經試驗調查結果，發現較常見生長於瓊麻園裡之雜草有39 種，其中禾本科（Gramineae）佔最多，次為莎草科（Cyperaceae）及菊科（Coopositae）。以不同種類殺草劑噴施調查各種雜草殘存率，獲知禾本科抗藥性較大，殘存率高，次為莎草科、豆科（Leguminosae）及石竹科（Cayophyllaceae）。莧科（Amarau - thaceae）及菊科之雜草，全部死亡。各處理間對殺草效果，成本分析及對瓊麻生長之評價，發現噴施混合藥劑之B 處理每公頃使用85% Dowpons 8 kg 加2-4-D 2kg 或D 處理每公頃使用80% Kamex 2 kg 殺草效果較佳，且比人工除草區各自增產13 和20%，比不除草區各自增產58 和68%，同時每公頃較人工除草區節省生產成本4,696 和5,400 元。
Because the uses of sisal hemp fiber can be substituted by the synthetic products, the cultivation and price of sisal hemp are greatly reduced. In addition, the widespread of different weeds in sisal hemp field also influences the growth of sisal hemp plants. Therefore, the total production of this crop becomes insufficient for the requirements of domestic demand. In order to solve this problem, experiments were conducted during the period of 1977 to 1979. The results are summarized as follows:
About 39 weed species were identified from the sisal hemp field in Pintung area. Most of them are Gramineae weed, next were Cyperaceae and Compositae weeds, the survival of weed species in field depended on the application of different herbicides. Granimeae are more tolerant to different herbicides than the others, While, Amaranthaceae and Compostiae weeds are more sensitive.
Evaluation of different herbicides on the growth of sisal hemp showed that 85% Dowpons (8kg/ha) plus 2-4-D (2kg/ha) or 80% Kamex (2kg/ha) plus 2-4-D (2kg/ha) increased the fiber production by 13 and 20% in comparing with the hand-weeding treatment; 58 and 68% for the non-till treatment, respectively, Furthermore, approximately 5,000 N. T. Dollars of the labor cost can be saved if both herbicides were used.
Publisher
農業試驗所
Type
journal article
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