Method for laser regulation of growth of field crops and application in rice
By deploying semiconductor laser lights around the paddy fields and adjusting the light quality ratio and beam pitch angle, the problem of uneven light environment in paddy fields was solved, and precise control of light quality, light intensity and illumination time was achieved, thereby improving the photosynthetic efficiency and yield of rice.
Patent Information
- Application Number
- CN202610190308.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-10
- Publication Date
- 2026-05-01
- Estimated Expiration
- 2046-02-10
AI Technical Summary
The natural light environment in open fields is uneven in time and space, making it difficult to meet the differentiated light requirements of rice at each key growth stage. Existing light source technologies are unable to achieve precise matching of light quality regulation under open field conditions, resulting in low photosynthetic efficiency, increased ineffective tillering, insufficient panicle differentiation and grain filling, and affecting yield.
A laser control method using directional and zoned illumination is adopted. By deploying semiconductor laser lamps around the field plots and adjusting the light quality ratio, photosynthetic photon flux density, and laser beam pitch angle, an east-west laser illumination path is formed, which penetrates the canopy to improve the light conditions of the middle and lower leaves, ensuring the rational distribution and utilization of light energy.
It significantly improves the photosynthetic potential and dry matter accumulation capacity of the rice population, enhances rice yield and its stability, shortens the time from greening to tillering by 10%-17.5%, increases the number of effective tillers by 12%-17%, increases the net photosynthetic rate of the canopy by 15%-30%, and ultimately increases the yield by 5%-30%.