According to the results of our determination of various early and late rice varieties used in production for many years, the following conclusions can be drawn: China's glaze rice varieties do not generally have dormancy, and fully matured glazed rice seeds are harvested and the germination rate is Up to 80 or more intestine, so that it completely germinates. However, there are some differences between varieties. The dormancy period of japonica rice varieties is generally more obvious than that of glaze rice varieties, and the early japonica varieties are deeper than the late japonica varieties. Late cultivars also have different traits, planting time, and year. The dormancy period is within one month or there is no dormancy period, and the dormancy period of long-lasting pods can be as long as several months.
It was found that the zen shell of dormant rice had no inhibitory effect on the germination of non-dormant rice grains. For example, the rate of germination of Kefu early-release shell Baoyuan Fenglong rice was 92.0 intestine. Kefu early rice is 8. In the intestine, the original early rice and rice were 99.5 intestines and 98.0 intestines. Therefore, we believe that the dormancy of rice is not caused by the presence of inhibitory substances in the zen husk, but due to poor air permeability of the species. In order to further clarify the relationship between rice seed coat and dormancy. We used dormant seeds for machine shelling and hand shelling. Germination tests were conducted with intact seeds that were not shelled. Obviously, due to the machine peeling damage the seed coat, enhance the permeability of brown rice and promote germination. It can be concluded that the reason for the dormancy of rice seeds is firstly the effect of the captive shell, followed by the effect of the seed coat. Their hindrance to germination is caused by poor air permeability rather than the presence of inhibitory substances. The seeds with shallow dormancy have good air permeability, and the reason for dormancy is mainly the hindrance of shell release. The main reason for the dormancy of rice seeds is due to the poor air permeability of the shell. Therefore, shelling has a significant effect on breaking dormancy.
Through the test results of the rice seed sampled and counted by the photoelectric automatic counting instrument, we can clearly find out that if the seed germination rate of the rice is to be determined during the seed test, it is best to remove the rice seed. But also need to pay attention to the need to germinate immediately after shelling, otherwise the impact on the germination rate is very large. In the breeding and breeding work, it is necessary to sow the seeds immediately after harvesting. It is recommended that germination should be promoted by treatment of dormant seeds with diluted hydrogen peroxide or nitric acid before sowing. If you do not immediately sow, you can use warming treatment to break the seed dormancy.
The Output Coupler usually has reflectance in the range 40% to 70%. In order to optimize power and spatial profile of the laser beam, the output coupler and end Mirror have optical surfaces with well-defined radii of curvature.Output coupler (OC) is a partially reflecting dielectric mirror used in a laser cavity. It has a function to transmit a part of intracavity optical power in order to get a lasing.
Laser Output Couplers often require a slightly wedged substrate to eliminate interference from multiple reflections inside the component. If you require a specific wedge value, please specify this when ordering.
Total Reflector and Output Coupler are the key optical components in the laser cavity, are a part of the laser process.
Output Couplers are commonly used as laser output coupler or beam attenuator.Laser output couplers often require a slightly wedged substrate to eliminate interference from multiple reflections inside the component
Output coupler (OC) is a partially reflecting Dielectric Mirror used in a laser cavity. It has a function to transmit a part of intracavity optical power in order to get a lasing. Output couplers listed below can be found in stable resonators, as they have a spatially constant reflection/transmission (R/T) value, which is the main property of such kind of mirror. Such cavity's parameters as pump power threshold, maximum output power and laser efficiency highly depends on R/T ratio of output coupler.
We could provide 70%R30T, 65%R35T,60%R40%T ect
Mirror And Output Coupler,Output Coupler,Optical Output Coupler,Laser Output Couplers
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