What are the physical prevention and control methods of pests and diseases in the production of "specialty dishes"?

The physical control methods of common diseases and pests in the production of "specialty dishes" are as follows:

(1) manual killing When the pest occurrence area is small, manual killing can be adopted.

(2) Barrier Prevention Use insect-proof nets to set up barriers to stop the invasion of pests. If the seedling stage is covered with a 30-mesh insect-proof net (or an insect-proof net is added at the air outlet), closed production will be implemented. When sick plants and leaves are found, they should be pulled out or removed immediately to prevent other healthy plants from being infected.

(3) Yellow boards are used to trap and kill aphids and whiteflies. And set the yellow board to trap and kill. You can make your own yellow board (or yellow board, yellow strip, etc.). ) It has adhesive ability and hangs in the air outlet, aisle and rows of greenhouse to trap and kill small pests such as aphids and whiteflies. The manufacturing method is simple. Wood, plastic or cardboard can be coated with a layer of butter or 10 engine oil after being painted yellow. The height is slightly higher than the plant, and the effect is not good if it is too high or too low. In order to maintain the adhesion of the yellow board, it is necessary to reapply butter or 1 0 engine oil about1week.

(4) Many insects that are active at night are phototactic, and they can be lured and killed by light. Blue light, incandescent light and bicolor light are widely used. At present, the frequency vibration insecticidal lamp has a good effect and is widely used. The lamp is safe and reliable, easy to use and has obvious effect of trapping and killing pests.

(5) Silver-gray reflective film can repel aphids. The reflectivity of silver-gray reflective film is above 35%, and the reflected light contains infrared light, which can drive away aphids. Covering with silver-gray plastic film and hanging silver-gray plastic film strips between the air outlets or planting lanes in the shed can be used to drive away migratory aphids, which has a certain effect on reducing the population density of aphids and alleviating virus diseases.