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Seed clarity analysis of the sample separation and weighing need to pay attention to the details of the seeds in the presence of impurities on the utilization of the seed has decreased, if the seed there is a certain number of vicious weed seeds, then the crop harvest will be subject to great Impact, and at the same time if seedlings are used, low seed clarities will result in broken seedlings, which will affect yield. After precision seeding, the seed's clarity is even higher. Guo's test on the degree of seed's clarity was not very strict from the very beginning, and it has been increasingly strengthened.
In the process of the clarity analysis, the screening, separation and analysis of the sample must be properly considered. The role of the screening and management is to initially separate the sample and increase the efficiency of the analysis. However, the results of the screening must not be considered as the three components have been all. Separated. In the process of screening, a blower type cleanness meter can be used to operate. This instrument is developed based on the principle of wind mechanics. There is a certain difference in the weight of the seed and the weight of the impurities. It is suitable for different seeds. Types of. Therefore, this link is a tight chain of screening, separation and analysis. In addition, the absence of sample components should also be avoided. With the aid of tools such as small brushes and magnifiers, no missing, no surplus, and no loss can be achieved to reduce errors. In the case of skin analysis, the seed cleanness table with amplification and radiation principle can be used for operation. Compared with humanization in design, it has 0-7 times amplification function and can clearly analyze seeds.
In the clarity analysis, the number of decimal places retained during weighing is determined based on the weight of the sample. Therefore, one ten-thousandths of an electronic balance must be used. Never use a tray balance or a low-precision balance. The calculation of the results of the degree of clarity analysis is relatively tedious. In particular, attention should be paid to the following issues: before the calculation, the percentage loss of weight loss before and after the analysis of the sample should be less than 5%; the percentages of the three components of the net seed, other plant seeds, and impurities should be calculated as the sum of the three components. The denominator cannot be replaced by the original value of the test sample; the mean value can only be calculated on the premise that the difference between the sample or semi-sample repetition is less than the allowable difference; otherwise, the sample should be re-sampled and tested; if there is a sample of heavy-duty material, the calculation result must be further Conversion; The revision of each component and the expression of results cannot be ignored.
The summaries and records of the final data are also of particular importance, and clear records will be detected.
In the process of the clarity analysis, the screening, separation and analysis of the sample must be properly considered. The role of the screening and management is to initially separate the sample and increase the efficiency of the analysis. However, the results of the screening must not be considered as the three components have been all. Separated. In the process of screening, a blower type cleanness meter can be used to operate. This instrument is developed based on the principle of wind mechanics. There is a certain difference in the weight of the seed and the weight of the impurities. It is suitable for different seeds. Types of. Therefore, this link is a tight chain of screening, separation and analysis. In addition, the absence of sample components should also be avoided. With the aid of tools such as small brushes and magnifiers, no missing, no surplus, and no loss can be achieved to reduce errors. In the case of skin analysis, the seed cleanness table with amplification and radiation principle can be used for operation. Compared with humanization in design, it has 0-7 times amplification function and can clearly analyze seeds.
In the clarity analysis, the number of decimal places retained during weighing is determined based on the weight of the sample. Therefore, one ten-thousandths of an electronic balance must be used. Never use a tray balance or a low-precision balance. The calculation of the results of the degree of clarity analysis is relatively tedious. In particular, attention should be paid to the following issues: before the calculation, the percentage loss of weight loss before and after the analysis of the sample should be less than 5%; the percentages of the three components of the net seed, other plant seeds, and impurities should be calculated as the sum of the three components. The denominator cannot be replaced by the original value of the test sample; the mean value can only be calculated on the premise that the difference between the sample or semi-sample repetition is less than the allowable difference; otherwise, the sample should be re-sampled and tested; if there is a sample of heavy-duty material, the calculation result must be further Conversion; The revision of each component and the expression of results cannot be ignored.
The summaries and records of the final data are also of particular importance, and clear records will be detected.
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