醫藥用 Capsuel에 넣은 粒劑型 殺?劑 BPMC, Carbofuran, Cartap, Chlorphenamidine-HCl, Cytrolane, Diazinon의 單一回 水稻根部處理로서 水稻 全生育期間에 걸친 이화멸충, 멸구, 매미충類 및 Virus 病의 防除效果를 檢定하기 爲해 圃場試驗을 實施하여 아래와 같은 結果를 얻었다. (1) 이화명충은 發生이 적었기 때문에 藥劑間에 큰 差異는 볼 수 없었지만 藥劑處理後 50日에서 이화명충 1化期 心枯莖率은 Cartap 0, Carbofuran 0.1, Chlorphenamidine 0.4, Cytrolane 0.5, BPMC 1.8, Diazinon 2.2이었으며 2化期 白穗率은 BPMC에서 1.2%이었을 뿐 그밖에 藥劑處理區에서는 白穗가 없었다. (2) 끝동매미충과 애멸구에 對해서는 BPMC와 Diazinon 處理區에서 比較的 낮은 密度를 보였다. 벼멸구에 對해서는 BPMC와 Carbofuran에서 棲息密度가 顯著히 낮아 그 防除效果가 좋았으나 Cartap, Chlorphenamidine, Cytrolane 및 Diazinon의 效果는 거의 期待할 수 없었다. (3) 오갈병의 發病株率은 Carbofuran이 2.4%, Cytrolane 4.5%, Chlorphenamidine 7.9%, Diazinon 8.0%, BPMC 8.1%, Cartap 14.5%, Diazinon粒劑水面施用 7.8%, 無處理 13.1%로서 Carbofuran 處理區에서 오갈병의 發病率이 가장 낮았다. 줄무늬잎마름病의 發生은 전혀 없었는데 그 原因은 統一벼는 줄무늬잎마름병에 抵抗性品種이기 때문인 것 같다. (4) 벼의 收量은 無處理 5,814㎏/㏊에 比하여 Carbofuran 6,649㎏, Cytrolane 6,340㎏, BPMC 6,315㎏, Chlorphenamidine 6,265㎏, Cartap 6,164㎏, Diazinon 5,944㎏, Diazinon粒劑 水面施用 6,102㎏ 로서 Carbofuran 處理區에서 벼의 收量이 가장 높았다. (5) Carbofuran 處理區에서 높은 收量을 보인 것은 Carbofuran 處理區에서 멸구ㆍ매미충類의 密度가 낮았고 오갈병의 發病率이 낮은데서 온 結果인 것 같다.
During 1973 a field experiment was carried out to evaluate effectiveness of the root zone application of insecticides in medical gelatin capsules for control of several rice insect pests and dwarf virus disease. At three days after transplanting the capsules were pushed by hand about 2.5㎝ into the soil, near roots of Tongil rice plants. At the given day intervals number of leaf-and plant-hoppers on the hills were recorded by direct count, and dead hearts and white heads by stem borers and dwarf virus infected hills were observed in the experiment plots. Finally grain yields were measured. The percentages of dead hearts and white heads in all the plots were too low for evaluating the effectiveness of insecticides against the striped rice borers. Carbofuran of the insecticides tested was relatively effective against green rice leafhopper(Nephotettix cincticeps) and small brown planthopper(Laodelphax striatellus), although small number of insects on the hills were recorded. Relatively small number of white-backed planthopper (Sogatella furcifera) was occured in the BPMC and Diazinon treated plots. BPMC and Carbofuran were highly effective against the brown planthopper(Nilaparvata lugens) to 80 days after treatment. Incidence of dwarf virus disease was least in the plots of Carbofuran treatment. The highest graiu yield was recorded in the plots treated with Carbofuran, and it seemed to be related with good protection from the dwarf virus disease and leaf-and plant-hoppers.
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