• 作者： 張長泉; 劉廷英
• 作者服務機構： 食品工業發展研究所
• 中文摘要： 稻穀收穫後，散裝貯藏於穀倉中，有利用竹篾編織之通風筒置於積穀中，其下端與外界相通，而頂端高過積穀表面，利用空氣對流而達通風散熱之效果。近年新建之穀倉有裝設馬達，壓入新鮮空氣於積穀中而達散熱通風之目的。此兩種不同通風系統之倉貯稻穀，經調查六甲鄉農會穀倉害蟲發生情形，發現主要者有穀蠹、玉米象及暹羅穀盜三種。害蟲密度隨深度增加而遞減。強力通風之積穀害蟲密度較竹篾筒通風者為高，應注意其防治。
• 英文摘要： Paddy rice is stored in bulk in eithernatural-ventilation or forced-ventilation store-houses in Taiwan. The former is composed ofseveral vertical ducts made of bamboo in storedpaddy. The bottom openings of the ducts areconnected to floor ducts which lead to outdooratmosphere, while the upper openings are abovethe paddy surface. The principle of cooling inthis system is based on the convection of hotand cold air. The forced-ventilation storehouseshave been constructed since recent years. It ismore quick and efficient to cool down the tem-perature than the other. The insect pests of paddy in these kinds ofstorehouses were surveyed in southern Taiwanthrough 1980. The dominant insects were lessergrain borer (Rhyzopertha dominica Fabricius),maize weevil (Sitophilus zeamais Motschulsky)and siamese grain beetle (Lophocateres pusillusKlug). The density of insect population decreasedsharply as the depth of the stored paddy in-creased. However, higher insect population den-sity was found in the forced-ventilation store-houses than the natural-ventilation one. There-fore, attention should be paid to the control ofthe insect pests in the forced-ventilation store-houses built recently in Taiwan.
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