1, color light method: special irradiation of crops with light of specific wavelength can obviously promote the growth of crops and change the nutritional composition of crops. Russia regularly irradiates tomatoes and cucumbers with red light, shortening their maturity by 30-45 days and increasing their yield by more than 2 times.
2. Music law: Russia regularly plays music with a certain frequency to vegetables in the greenhouse every day, and the output has increased by more than 1 times; Experiments show that playing classical music with moderate volume is more in line with the "taste" of crops.
3. Electric field method: All living things grow in this huge electromagnetic field on the earth's surface. According to this principle, American botanists have made gratifying achievements by creating artificial electric fields. The method is to install barbed wire as a positive electrode above the growth of crops to form a high-intensity electric field with the negative electrode of the land. Planting Chinese cabbage, cucumber, tomato and other crops in this electric field shortens the growth cycle by half and increases the yield by 3-6 times.