|Title:||水稻害蟲防治之省思||Other Titles:||Reconsideration of the rice insect pests control in Taiwan||Authors:||鄭清煥
|Keywords:||水稻;害蟲;管理;預防;rice;insect pests;management;preventive||Issue Date:||Jul-2009||Publisher:||農業試驗所嘉義分所||Start page/Pages:||65-82||Source:||農業試驗所特刊第138號||Conference:||台灣水稻保護成果及新展望研討會專刊||Abstract:||
Pathogenesis, host plant and environmental conditions have long been recognized as disease triangle, that concept is also adoptable to the insect pests. It was believed that abundance of pathogenesis and insect sources were highly correlated with the field's sanitation, while the cultivar, cultural practices might affect not only the plant tolerance (or resistance) to pests, but could also provide rich nutrition and suitable habitat to the pests. Therefore, it seems that most of factors affecting to the pest abundance can be changed to the conditions adverse to the pests to prevent the infestation. In case of rice insect pests, the infestation of rice stem borer (Chilo suppressalis), paddy borer (Scirpophaga incertulas) and the rice green leafhoppers (Nephotettix cincticeps) tending to negligible was considered due to the destruction of stubble, straw and weeds as soon as after harvest of the second cropping rice. Since the most major rice insect pests are semiaquatic insect, they prefer to inhabit in a highly moist conditions. Therefore, declining the microclimatic moisture through adjustment of cultural practices, such as lowering planting density, lowering fertilizer applications and adopting alternation of shallow flooding and dryness water management could be used to slowdown the population development, and accordingly the frequency of chemical application could be reduced. It is importance that these adjusted cultural practices should be also profitable to rice disease control but should not hamper the profit of rice production. Since the “integrated pest management” is one of branch system of the “integrated crop management”system, any change of a component in the system would affect to the function of other components. Therefore, strengthening the connection and consultation among branch systems, and uniting the branch systems to a practicable process for rice farmers is urgently needed.
|Appears in Collections:||植物保護系|
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