桃園區水稻水象鼻蟲之藥劑防治試驗

Insecticide Tests for Control of the Rice Water Weevil in Taoyuan District

施鍚彬(Hsi-Pin Shih) ； 葉祥漢(Shyang-Hann Yeh)

《桃園區農業改良場研究報告》 7期 (1991/03) Pp. 37-48

https://doi.org/10.29567/ZHWHGX.199103.0004

摘要

本項試驗以粒劑4% Cartap G.（50, 100, 150 g/box, 30 kg/ha），3% Carbofuran G.（50, 100, 150 g/box, 60 kg/ha），NTN G.（50, 100 g/box），1.5 % Ethofenprox G.（50, 100 g/box, 25 kg/ha）及5% Disulfoton G.（35 kg/ha）於水稻育苗箱機械播秧前24小時使用及插秧後生育初期水面施藥，調查水稻水象鼻蟲防治效果。試驗結果顯示使用4% Cartap粒劑於插秧後會產生嚴重藥害並抑制水稻生育。其餘供試藥劑亦會產生輕微藥害，約7天後恢復，對水稻生育無影響。試驗區水稻葉片被害率降低，分藥數、株高增加。其中以3% Carbofuran G.每箱50克、100克防治效果最佳。水面施藥試驗結果顯示各種藥劑處理均不會產生藥害。試驗區水稻葉片被害率降低。以3% Carbofuran G.每公頃使用的公斤及4% Cartap G.每公頃使用30公斤防治效果最佳。

並列摘要

Field test on the control of the rice water weevil (Lissornoptrus oryzophilus Kuschel) in 1990 included the following five insecticides: 4% Cartap granules at 50, 100. 150 g/box, 30 kg/ha; 3% Carbofuran G. at 50, 100. 150 g/box, 25 kg/ha and 5% Disulfoton G. at 35% kg/ha. Insecticides were applied to the water surface 24 hrs before transplanting and at the beginning of rice growing stage.The phytotoxicity was observed when insecticides were applied to the rice seedling box. Permanent injury of rice plant was observed after treatment with 4% Cartap G. at rates of 50. 100, and 150 g per box.In the other treatments, seedling were found slight yellowing on the leaves of rice and recovered after one week of application. The results of the experiments indicated that application of 3% Carbofuron G. at 50-100 g/box to the seedling box or 3% Carbofuran G. at 60 kg/ha and 4% Cartap G. at 30 kg/ha in the rice field could give effective control of the rice water weevil.