Precautions for the control of solar insecticidal lamps in rice fields

The insecticidal lamp enters the rural field is the pioneer of agricultural development. In the mountainous area, if the insecticidal lamp with electricity storage is used, it is a difficult thing to install and use, because the power problem is a big problem. In view of such a situation, the use of solar energy is a very effective method, and the effect of the research and production of solar insecticidal lamps after putting them into use is also very gratifying.

In the 8 mountainous towns and towns with 300-700m altitude, the solar insecticidal lamp was tested for the prevention and control of rice pests. It has achieved successful experience and obtained remarkable economic, ecological and social benefits. It has been unanimously recognized by the majority of rice farmers. It will have a great impact on the large-scale and large-scale promotion of solar insecticidal lamps in the future. As the hanging lamps reduce the pest damage, their rice yield is significantly improved. According to the comparison of 8 points, the output is 70hm2, and the average output of rice is 7995kg/hm2, which is 720kg/hm2 higher than that of the no-lighting area, an increase of 9.9%, and the largest increase is 20.8%.

Solar insecticidal lamps have the characteristics of promoting green ecology, energy saving and environmental protection, saving labor, saving time and killing insects. Proper use and maintenance of solar insecticidal lamps can extend their life and maintain a safe and efficient working condition. Therefore, farmers should pay attention to the following matters in their use:

(1) Fixed person management. The rice fields in the mountains are scattered, and the solar insecticidal lamps have a wide distribution range and the transportation is inconvenient. Each person can be responsible for 10 to 15 lights. Every day, every lamp should be cleaned and inspected once. If problems are found, they should be repaired in time or reported to the manufacturer for repair.

(2) Clean (wash) the grid, collect the insect cones and insect bags every day. Although the area of ​​rice light control in mountainous areas is not large, there are many pests such as forests, rice, vegetables, fruit trees, etc., especially mosquitoes and small insects, which may be filled with electricity every night. Therefore, after turning off the lights every morning, it is necessary to clean the grid with a brush in time, and remove the pests and debris on the collecting cone. The pests in the insect bag can be used to feed chickens (ducks) and fish, and then wash them with water and then re-sling them. Do not affect the pest control effect caused by the grid, the collecting cone and the insect bag filled with pest residues.

(3) Turn off the lights during thunderstorms. There are more thunderstorms in the southern mountainous areas. In case of thunder and heavy rain, turn off the lights in time to prevent the voltage from burning out. Immediately after the thunderstorm, the lights are turned on to prevent insects from turning off for a long time.

Ultrasonic Cleaner

Ultrasonic waves propagate in the liquid, causing the liquid and the cleaning tank to vibrate together at the ultrasonic frequency. When the liquid and the cleaning tank vibrate, they have their own natural frequency. This vibration frequency is the sound wave frequency, so people hear the buzzing sound. With the continuous development of the cleaning industry, more and more industries and enterprises have used ultrasonic cleaning machines.
For the principle of ultrasonic cleaning machine, the high-frequency oscillation signal sent by the ultrasonic generator is converted into high-frequency mechanical oscillation by the transducer and propagated to the medium-the cleaning solvent. The ultrasonic wave radiates forward in the dense and dense phases in the cleaning liquid. The flow of liquid produces tens of thousands of tiny bubbles with a diameter of 50-500μm, and the tiny bubbles existing in the liquid vibrate under the action of the sound field. These bubbles form and grow in the negative pressure zone where the ultrasonic wave propagates longitudinally. In the positive pressure zone, when the sound pressure reaches a certain value, the bubbles increase rapidly and then suddenly close. And when the bubble is closed, a shock wave is generated, and thousands of atmospheres are generated around it, destroying insoluble dirt and dispersing them in the cleaning liquid. When the group particles are wrapped in oil and adhere to the surface of the cleaning part, the oil is emulsified and solid Particles and detachment, so as to achieve the purpose of cleaning parts purification. In this process known as the "cavitation" effect, the closed bubble can form a high temperature of several hundred degrees and an instantaneous high pressure of more than 1,000 atmospheres.

The advantages of the ultrasonic cleaning machine are: the ultrasonic cleaning effect is good, and the operation is simple. The sound that people hear is a sound wave signal with a frequency of 20-20000 Hz. The sound wave above 20000 Hz is called an ultrasonic wave. The transmission of the sound wave propagates longitudinally according to a sinusoidal curve, producing a large number of small bubbles. One reason is that partial tensile stress occurs in the liquid to form negative pressure. The decrease in pressure makes the gas originally dissolved in the liquid supersaturate and escape from the liquid and become small bubbles; the other reason is that the strong tensile stress tears the liquid apart. "A void is called cavitation.