An Ecological Study of White-Back Planthopper, Sogatella Furcifera Horvath in Vietnam, 1968
Other Title
越南白背飛蝨生態之研究
Journal
農業研究
Journal Volume
19
Journal Issue
4
Start Page
82
End Page
90
Date Issued
1970-12-10
Date
1970-12-10
Author(s)
Chia-hwa Tao
Ngo-Dinh Ngoan
陶家驊
吳定秀
Abstract
The White-back plant hopper, Sogatella fucifera Horvath is a major pest of rice plants in favorable weather in South Vietnam. It produces more than sixteen generations a year. The degree of infestation varies from year to year and is usually associated with climatic conditions and multiple rice practices. The hopper population is high in wet season and low in dry hot season. The pest attacks rice plants causing more serious injury on differential stage than that of the tillering stage. Because at latter stage, the multiplication of this pest is easily influenced by some external factors such as wind velocity, length of daytimes, number is easily influenced by some external factors such as wind as wind velocity, length of daytimes, number of cloudy days, water level and hill spacing. The damage to rice plants in irrigated fields is more serious than that in the ordinary fields where water level is usually high. Therefore, the outbreak of the pest in Central Vietnam is more serious than in South Vietnam, as the environmental condition would be suitable for it multiplication throughout the rice growing season.
白背飛蝨（Sogatella furcifera ( Horvath ) ）為越南水稻區重要害蟲之一，在越南自然環境之下，適其繁衍滋生，一年發生16世代，其蔓延成災，往往受氣候和水稻栽培制度相互密切之關係。故其為害水稻程度，隨歷年氣候和環境而異，就其發生環境而言，中越水稻區較湄公河三角洲水稻區有利條件，蔓延猖獗季節恆在高溫多濕時期，構成水稻為害時期，尤以分化時期最為嚴重，但品種間亦有顯著差異IR5及IR8兩個品種受其為害較當地品種為熾烈，一旦適其氣候和環境，常導致嚴重災害發生。通常在水稻分蘗時期，鮮有其構成災害發生，惟時受外界因子干擾而影響所致，諸如風之速力、日照和陰日時間，禾田間水位之高低，以及水稻行距離較大等，足可抑制其發生。故禾田灌溉區，常以灌溉水量限制，遇其繁衍滋生其為害程度則較普通禾田自然灌溉區為嚴重，蓋因其水位常高達灌溉區所致也。
Publisher
農業試驗所
Type
journal article
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