The etiology caused by lack of illumination, high humidity, and disrupted growth laws always occurs in the winter. It may also be due to overcrowding or a sudden drop in temperature caused by frost. The bulb is mildly infected by Fusarium, with less rooting, low temperature, and insufficient transpiration, all of which can cause the occurrence of bud splitting.
Control methods
1. Pick bulbs before planting, and process planting sites (plant spacing and light) during the planting period.
2, no bulbs planted in winter.
3, light should be sufficient, the best cultivation of the northern hemisphere greenhouse in the iris. Because the appendix needs plenty of light to make a good flower.
4, water supply should be sufficient, especially for the root system.
5. To reduce the greenhouse temperature on cloudy days, especially when the stems grow, in order to slow the growth rate. To grow too fast requires a lot of nutrition. It can easily lead to cracking, especially in the case of high temperatures, by heating the appropriate ventilation to keep the crop alive.
6, to avoid sudden changes in temperature, because the transpiration of plants in this case is accelerated, unbalanced plant growth, will lead to a sudden increase in bud fissure.
7, to prevent frost.
Powell prism is a kind of optical scribing prism, which allows the laser beam to pass through to optimally scribing into a straight line with uniform optical density, good stability and good linearity. Powell prism scribing is better than the scribing mode of Cylindrical Lens, which can eliminate the central hot spot and faded edge distribution of the Gaussian beam.Powell prism is a kind of optical scribing prism, which allows the laser beam to pass through to optimally scribing into a straight line with uniform optical density, good stability and good linearity. Powell prism scribing is better than the scribing mode of cylindrical lens, which can eliminate the central hot spot and faded edge distribution of the Gaussian beam.
Laser Line Generator Lenses, also known as Powell lenses, generate a straight, uniform laser line by fanning out a collimated beam in one dimension, as shown in the diagram above. The apex of each lens features an aspheric curve that evenly distributes the optical power, resulting in an intensity variation of less than 25% over the center portion of the line. You will get more even energy distribution along the laser line than using the rod lenses and lenses.
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