PPF (luminous flux density) is an indicator used to measure the light energy output of plant lamps, indicating the flow of light energy through a unit area in a unit time. The higher the PPF, the following effects on plant lights:
1. Provide more adequate light energy: high PPF means that plant lamps can output more light energy, which is very important for plant photosynthesis. Photosynthesis is a key process for plant nutrient synthesis and growth, and high PPF can provide more adequate light energy and promote the efficiency of plant photosynthesis, thus promoting plant growth and development.
2. Promote the photosynthesis efficiency of plants: plant lamps with high PPF can provide more intense light, so that the chlorophyll on the leaves of the plants can absorb light energy more fully, thus improving the efficiency of photosynthesis. The improvement of photosynthesis efficiency can increase the nutrient synthesis capacity of plants and promote the growth and development of plants.
3. Increase the yield and quality of plants: high-PPF plant lamps can provide more intense light and promote the growth rate and yield of plants. In agricultural production, the use of high-PPF plant lamps can increase the yield of crops, and the quality of crops may also be improved due to the increase in light intensity.
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Clever use of the open sleeve
When we grind the φ20mm outer circle shown in Figure 1, it is difficult to clamp. Because it is directly clamped on the outer circle of φ5mm, due to insufficient rigidity, vibration and deformation occur during grinding. In order to enhance the rigidity of the clamping part, an opening sleeve (Fig. 2) is added to the outer circle of φ5 mm, and the right end surface of the sleeve abuts against the A end surface of the part (Fig. 3). The problem of rigidity of the clamping portion is solved. It turns out that this method is simple and practical.