尼日利亚稻田养鱼加灯光诱虫应用效果分析

The application effect of different trench in rice-fish farming with lamplight insect lure in Nigeria

在尼日利亚科基州进行不同沟凼的稻田养鱼加灯光诱虫应用研究，其沟凼模式分围沟和十字沟，灯光以煤油灯代替电灯，鱼稻品种均为当地常见品种。结果表明，开挖占稻田面积10％～15％不同类型的鱼沟或鱼坑，其投入成本相同，鱼稻产量相近，均比单纯稻田收入增加3．5～4．5倍。示范成果还进一步验证了以往在尼日利亚进行的灯光诱虫试验结论，即在稻田养鱼中增加灯光诱虫，能够将有害昆虫变为鱼的全价饲料，减少稻田的病虫害，鱼、稻分别增产14％和9．5％，达到经济效益和生态效益双丰收。

This paper summarizes the application effect of different trench in rice-fish farming with lamplight insect lure in Nigeria. The trenches are loop trench and cross trench,kerosene lights instead of electric lights ,the variety of rice and species of fish are common one. The results showed that the yields and the costs are the same of digging the different trench for rice-field farming. The income is 3.5 - 4.5 times more than sole rice-field fanning. It still verified that as the lamplight lure insects in rice field fanning was applied,the yields of amplitude of fish and rice increased 14% and 9.5% respectively. This has reduced the disease and insects, converted the insects or pest to the complete formulated feeds for fish and attained bumper harvest of both rice and fish.