In the prevention and control of crop diseases and insect pests, the insecticidal lamp is a common physical control technology, plays an important role in the prevention and control of crop diseases and insect pests. The use of insect killing lamp light source with strong phototaxis, attraction of insects, with hunting, the number of effective pest control test area, reduce the use of pesticides, reduce environmental pollution and promote the sustainable development of grain production, and has wide application prospect in agricultural production. There are many types of lamp, black light lamp, a common frequency trembler grid lamp and fan suction trap types, conventional power and solar energy utilization of 2 types. The following 3 kinds of common insecticidal lamp in agricultural production principle and application of a certain comparison.

1 different black light trapping principle is a special gas discharge lamp, a 330 ~ 400 nm UV light, this light is not sensitive to the human, but is very sensitive to the insect's compound eye 365 nm wavelength ultraviolet radiation, the black light field at night has a strong attraction to insects. Black light H-20, H-40 models, the rated voltage of 220 volts, the power was 20 watts, 40 watts. The same frequency trembler lamps using the phototaxis of insects, the production is 320 ~ 400 nm wavelength light source, light to attract insects flying around, equipped with a high voltage power grid, contact the electric shock net in the insect's instant release of strong current, the insect is stunned or killed after falling into the insect collecting bag. Recommended by the Ministry of agriculture, the main representative of the product is more than the brand frequency vibration type insecticidal lamp, PS-15 and other models. The use of electric fan fan suction light absorption principle, and phototactic insects do not need any contact parts of light, light in the process of flying around the air suction insect lure bottle, and active arrest.

2 trapping effect differences in the number of pests trapping significant frequency trembler lamps is generally black light 2 to 5 times, three or four times the trapping force fan suction trap on the rice stem borer, narangaaenescensmoore other lepidopteran pests as Jiaduo Frequency Trembler lamps, total catches for 4 times of the latter.

3 of the insect protection effect of different frequency trembler lamps and black lights will be insects corona or die, causing heavy damage, insect collecting bag of the 2 kinds of insecticidal lamps in all insects almost all day to death. The principle of using light suction fan herbivorous, carnivorous insect pests, mixed collection of phototactic insects, to create a good environment for ventilation and moist, make enemies comfortable enough food to survive, the insects died from hunger, eggs or become food after 3 days of observation of insects, insect collection in paddy rice, Lepidoptera pests mortality for the 100%, but the survival rate of natural enemies, Paederus carabid and Cyrtorhinus lividipennis were above 80%, can effectively protect the population of natural enemies in rice fields.

Although the 3 kinds of light in agricultural production and benefit pest control effect is different, but because of the cost difference of black light low price (300 yuan per 100 ~), frequency trembler lamps moderate price (500 yuan per 300 ~), fan suction light is expensive (each about 2000 yuan), so the agricultural production can be based on the comprehensive consideration of the economic strength and the occurrence of local pests, selection of insecticidal lamps appropriate to carry out the control of agricultural pests.