Detection method for making up correlation between indoor germination rate and field emergence rate of corn seeds

Abstract

The invention belongs to the technical field of agricultural seed quality detection, and provides a detection method for making up the correlation between the indoor germination rate and the field emergence rate of corn seeds, and the method comprises the following steps: making a germination test sand bed, and blending wet sand; the number of normal seedlings is determined, and the normal seedlings are classified and counted according to the length; performing field trials, and counting the field emergence rate of the corn seeds; calculating a correlation coefficient according to the number of normal seedlings in different length ranges and a field test seedling emergence measurement result; calculating the lowest field emergence rate requirement meeting the correlation requirement; and reversely calculating the number of seedlings meeting the correlation requirements of the normal seedling groups with different lengths to obtain the minimum number required value of the groups with different seedling lengths. According to the method, the number of seedlings with high or medium and high vitality is used as a supplementary quality judgment requirement, so that the seed quality is comprehensively guaranteed, the situation that the field emergence rate does not meet the expectation due to insufficient seed vitality is prevented, and the safety of agricultural production seeds is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural seed quality detection, in particular to a detection method for compensating for the correlation between indoor germination rate and field emergence rate of corn seeds. Background Art

[0002] In modern agricultural production, seed quality is directly related to crop yields and farmers' economic benefits. Seed germination rate and field emergence rate are important indicators for evaluating seed quality. However, existing seed quality testing technologies, while ensuring that seed emergence rate meets relevant quality standards, often fail to fully consider the specific manifestations of seed vitality, resulting in a certain disconnect between emergence rate and germination rate.

[0003] Currently, the germination capacity test method used only detects the overall germination rate of the seed batch. This method counts the germination of the seed batch in a laboratory environment and uses the counting results to determine whether it meets the germination quality standards.

[0004] However, the current seed germination rate is based on the minimum requirement for the proportion of normal seedlings in the germination test, which is not less than 85%. The allowable error is allowed to be used for quality compliance judgment in supervision and random inspection. Since the current definition standard of normal seedlings is based on the possibility that the biological characteristics of seedlings may grow into normal seedlings under ideal conditions, there is a wide range of judgments. This wide range leads to the wide range of differences in seedling growth within the normal seedling population, which leads to large differences in seed germination rate, vitality and field emergence rate of some seed batches within the same seed batch, and the lack of correlation. The three are in a nonlinear correlation state. The reason is the difference in the proportion of the number of seed grains with strong and weak vitality in the same seed batch. This is the reason why some scholars have concluded that "under consistent conditions, the germination rate and field emergence rate of high-vigorous seed batches must be high, while the vitality and field emergence rate of high-germination rate seed batches are not necessarily high."

[0005] To this end, technical personnel in this field have proposed a detection method to compensate for the correlation between the indoor germination rate and the field emergence rate of corn seeds, aiming to improve the accuracy and reliability of seed quality assessment. By taking the number of high or medium-high vigor seedlings as a supplementary quality judgment requirement, comprehensive seed quality assurance can be achieved to prevent the field emergence rate from not meeting expectations due to insufficient seed vitality, thereby ensuring the safety of seeds used in agricultural production. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a detection method for compensating the correlation between indoor germination rate and field emergence rate of corn seeds, so as to solve the problems raised in the background technology.

[0007] A detection method for compensating for the correlation between indoor germination rate and field emergence rate of corn seeds comprises the following steps:

[0008] S1. Prepare a germination test sand bed and mix wet sand;

[0009] S2. determining the number of normal seedlings, classifying and counting the normal seedlings according to their lengths, and obtaining the number of normal seedlings in different length ranges;

[0010] S3, conducting a field test, calculating the field emergence rate of corn seeds, and obtaining the field test emergence measurement results;

[0011] S4. After the test, the correlation coefficient was calculated based on the number of normal seedlings in different length ranges and the results of field test seedling emergence determination;

[0012] S5. Calculate the minimum field emergence rate requirement that meets the correlation requirements based on the national standard requirements for germination rate, and obtain the minimum field emergence rate requirement value;

[0013] S6. Use the minimum field emergence rate requirement value to reversely calculate the number of seedlings that meet the correlation requirements of normal seedling groups of different lengths, and obtain the minimum number requirement value of groups of different seedling lengths, which serves as a supplement to the indoor germination force test of seed quality and the germination rate compliance judgment.

[0014] Preferably, the wet sand is prepared by calculating the amount of water added according to the method of dry sand weight × 0.7 × 0.24 = water consumption, wherein 0.7 is selected for seed size difference, and 0.24 is the sand saturation;

[0015] Use a germination box with a specification of 13cmx19cm. The amount of sand used in a box of wet sand bed is 800-900 grams, including 450-500 grams for the bottom layer and 350-400 grams for the covering layer. The allowable error is 50 grams as the sand bed for the corn seed germination test.

[0016] Preferably, the normal seedlings are classified according to their length, and the classification range is: seedlings with a length greater than or equal to 10 cm are high-vigor seedlings, seedlings with a length greater than or equal to 6 cm are medium-to-high-vigor seedlings, seedlings with a length between 10 cm and 6 cm are medium-vigor seedlings, and seedlings with a length between 1 cm and 6 cm are low-vigor seedlings.

[0017] Preferably, the field emergence rate statistics include: selecting a field with uniform, loose and flat soil, when the average ground temperature is above 20°C, according to the production requirements of corn field planting in agricultural production, using mechanical land preparation, 40 cm furrowing, 120 cm soil opening, 80 cm row spacing, 30 cm plant spacing, single seed spot sowing, 5-8 cm sowing depth, four replicates, and 100 seeds per replicate;

[0018] After sowing and covering the soil, soak the field with water until the surface is level, and then remove the water after the field is moistened for 30 minutes;

[0019] 7 to 10 days after sowing, observe the emergence of seedlings in the field. When more than 50% of the seedlings are 10 cm above the soil surface or have two leaves and one heart, count the seedlings and obtain the results of the field test emergence measurement.

[0020] Preferably, the correlation coefficient is calculated based on the number of normal seedlings in different length ranges and the results of field test seedling emergence measurement, and is expressed as:

[0021]

[0022] Where n is the number of seed lots involved, ∑(xy) is the sum of the products of germination rates and field emergence rates of all seed lots, ∑x is the sum of germination rates of all seed lots, and ∑y is the sum of field emergence rates of all seed lots.

[0023] Preferably, after the test is completed, the corresponding minimum numerical requirement for field emergence rate is determined based on the specific data given by the test, the correlation coefficient calculated by the correlation analysis between different groups and indicators, and the minimum numerical requirement of the current germination rate standard;

[0024] The minimum number percentage of high-vigor seedling groups or medium- and high-vigor seedling groups in the normal seedling group in the germination test that meets the minimum field emergence rate requirements is calculated separately, which serves as a supplement to the current standard for comprehensive judgment of seed germination quality.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention ensures that the seed germination rate meets the current quality standards while adding the minimum limit requirement for the number of high-vigor seedlings or the number of medium- and high-vigor seedlings in the normal seedling count of the germination test as a supplementary requirement for quality judgment. This can ensure that the correlation between the wholesale germination rate of the tested seeds and the field emergence rate remains at a certain level, thereby avoiding the shortcoming in the current seed quality judgment rules that the wholesale germination rate of seeds meets the quality judgment standard requirements but the field emergence rate is insufficient due to insufficient seed vitality, effectively ensuring the quality of seeds used in agricultural production, reducing agricultural production risks, and providing seed quality detection technical support for high-quality agricultural development. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a flow chart of a method for detecting the correlation between indoor germination rate and field emergence rate of seeds. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] As attached Figure 1As shown:

[0030] Embodiment: The present invention provides a detection method for compensating for the correlation between indoor germination rate and field emergence rate of corn seeds, comprising the following steps:

[0031] S1. Prepare a sand bed for germination test and mix wet sand. The amount of water added is calculated by the method of dry sand weight × 0.7 × 0.24 = water consumption, where 0.7 is selected for seed size difference (0.6 for small grains, 0.7 for medium grains, and 0.8 for large grains), and 0.24 is the sand saturation (the coarseness of the sand can be determined in the range of 0.22 to 0.26, 0.22 for fine sand and 0.26 for coarse sand, and 0.24 is usually selected;

[0032] Use a germination box with a specification of 13cmx19cm. The amount of sand used in a box of wet sand bed is 800-900 grams, including 450-500 grams for the bottom layer and 350-400 grams for the covering layer. The allowable error is 50 grams as the sand bed for the corn seed germination test.

[0033] S2. The germination rate test follows the current GB / T3543.4-1995 "Regulations for the Inspection of Crop Seeds" to determine the number of normal seedlings, classify and count the normal seedlings according to their length, and obtain the number of normal seedlings in different length ranges; normal seedlings are classified according to their length, and the classification range is as follows: seedlings with a length greater than or equal to 10 cm are high-vigor seedlings, seedlings with a length greater than or equal to 6 cm are medium-to-high-vigor seedlings, seedlings with a length between 10 cm and 6 cm are medium-vigor seedlings, and seedlings with a length between 1 cm and 6 cm are low-vigor seedlings.

[0034] S3, conduct field test, count the field emergence rate of corn seeds, and obtain the field test emergence test results; the field emergence rate statistics include: select uniform, loose and flat fields with an average ground temperature of 20°C or above, according to the requirements of agricultural production corn field planting production, use mechanical land preparation, 40cm furrowing, 120cm soil opening, 80cm row spacing, 30cm plant spacing, single seed spot sowing, sowing depth of 5-8cm, four replicates, and 100 seeds per replicate;

[0035] After sowing and covering the soil, soak the field with water until the surface is level, and then remove the water after the field is moistened for 30 minutes;

[0036] 7 to 10 days after sowing, observe the emergence of seedlings in the field. When more than 50% of the seedlings are 10 cm above the soil surface or have two leaves and one heart, count the seedlings and obtain the results of the field test emergence measurement.

[0037] S4. After the test, the correlation coefficient was calculated based on the number of normal seedlings in different length ranges and the results of field test seedling emergence, expressed as:

[0038]

[0039] Where n is the number of seed batches involved, ∑(xy) is the sum of the products of germination rate and field emergence rate of all seed batches, ∑x is the sum of germination rate of all seed batches, and ∑y is the sum of field emergence rate of all seed batches. Calculate the correlation coefficient between germination rate and field emergence rate of participating seed batches; calculate the correlation coefficient between the proportion of normal seedlings in different length ranges within the required range of different germination rate intervals and field emergence rate; calculate the correlation coefficient between the proportion of normal seedlings in different length ranges within different germination rate intervals. Compare the correlations to determine the required value of another indicator corresponding to the specified value of one indicator.

[0040] S5. Calculate the minimum field emergence rate requirement that meets the correlation requirements based on the national standard requirements for germination rate, and obtain the minimum field emergence rate requirement value;

[0041] S6. Use the minimum field emergence rate requirement value to reversely calculate the number of seedlings that meet the correlation requirements of normal seedling groups of different lengths, and obtain the minimum number requirement value of groups of different seedling lengths, which serves as a supplement to the indoor germination force test of seed quality and the germination rate compliance judgment.

[0042] According to the specific data given by the test, the correlation coefficient calculated by the correlation analysis between different groups and indicators, combined with the current minimum numerical requirements of the germination rate standard, the corresponding minimum numerical requirements of the field emergence rate are determined;

[0043] The minimum number percentage of high-vigor seedling groups or medium- and high-vigor seedling groups in the normal seedling group in the germination test that meets the minimum field emergence rate requirements is calculated separately, which serves as a supplement to the current standard for comprehensive judgment of seed germination quality.

[0044] From the above, it can be seen that while ensuring that the seed germination rate meets the current quality standards, adding the minimum requirements for the number of high-vigor seedlings or medium-high-vigor seedlings in the germination test as a supplement to the quality compliance judgment can ensure that the correlation between the wholesale germination rate of the inspected seeds and the field emergence rate remains at a certain level, thereby avoiding the shortcomings of the current seed quality judgment rules that the wholesale germination rate of seeds meets the current quality judgment standards, but the field emergence rate is insufficient due to insufficient seed vitality. Effectively ensure the quality of seeds used in agricultural production, reduce agricultural production risks, and provide seed quality testing technical support for high-quality agricultural development.

[0045] Experimental example: The current national quality standard for corn seeds for field use, GB / 4404.1--2008, stipulates that the germination rate should not be less than 85%; Article 25 of the Management Measures for the Supervision and Sampling of Crop Seed Quality (Order No. 50 of the Ministry of Agriculture and Rural Affairs in 2005) and 7.3.3 of the General Rules for Crop Seed Labeling, GB20464--2006, stipulate that the germination rate uses the "allowable error" to determine the quality conformity. The "allowable error" for the germination rate in the range of 80% to 86% is 5%, so the minimum requirement for the actual determination of corn seed quality is not less than 80% in practice.

[0046] Therefore, 21 of the 24 seed batches had a minimum germination rate requirement of 80%, that is, different values ​​corresponding to the germination rate value range with a germination rate of not less than 80% were taken to calculate the correlation coefficient and conduct correlation analysis.

[0047] The conversion requirements, values ​​and logical relationships of values ​​are given through experiments and calculations:

[0048] Use the calculation formula of correlation coefficient r: Calculate the correlation coefficients between different indicator categories respectively, use the CORREL function in Excel, the formula is =CORREL(array1,array2).

[0049] As shown in the following table:

[0050] Table 1: Statistics of germination rate, normal seedling classification and field emergence rate of 24 corn seeds

[0051]

[0052]

[0053] Table 2: Correlation between seed wholesale germination rate and normal seedling classification and counting population in germination experiment and field emergence rate

[0054]

[0055] Among the seed batches tested, within the seed batch range with germination rate x≧80%, the minimum requirement for judging the seed germination quality as qualified is: when the germination rate is not less than 80%, due to r(x,z)=0.7606, the field emergence rate is required to be not less than 80%×0.7606=60~61, with 60 as the limit value; due to r(x1,z)=0.7506, r(x2,z)=0.9334, the number of normal seedlings with medium and high vigor that meet the field emergence rate of not less than 60% is required to be not less than z÷r(x1,z)=60÷0.7506=79~80 or the number of normal seedlings with high vigor is not less than z÷r(x2,z)=60÷0.9334≈64~65. If one of the two meets the correlation quantity requirements, the field emergence rate can be met as not less than 59%~60%.

[0056] The numerical requirements for different indicators corresponding to the germination rate of not less than 85% are calculated and deduced in the same way as above.

[0057] The results show that the minimum requirement for seed germination quality to be qualified is: the germination rate is not less than 85%, and the number of high-vigorous normal seedlings is not less than 64-65, or the number of medium-high-vigorous normal seedlings is not less than 82. The field emergence rate can be not less than 58%-59%.

[0058] The data in the table show that: among normal seedlings, the correlation between high-vigor seedlings and field emergence rate is higher, while the correlation between low-vigor normal seedlings and field emergence rate is lower, showing a negative correlation or no correlation. If the proportion of low-vigor normal seedlings among normal seedlings is high, the field emergence rate of the tested seed batch will be seriously affected.

[0059] As shown in Table 1, serial number 4, code HB8-2, the measured germination rate is 82%, the number of normal seedlings with medium and high vigor x1=64, the number of high vigor seedlings x2=48, the number of medium vigor seedlings x3=16; the number of low vigor seedlings x4=18; the field emergence rate is 41%.

[0060] According to the current germination rate quality judgment rules, the seed batch germination rate is 82%, the standard is 85%, and the allowable error is 5%. The seed batch germination rate quality is judged to be qualified. If the comprehensive judgment requirements given by the application research are used, the germination rate of 82% belongs to the counting period of germination rate not less than 80%. During this period:

[0061] r(x,z)=0.7606

[0062] r(x1,z)=0.7506

[0063] r(x2,z)=0.9334

[0064] The field emergence rate should be no less than 60%. In the absence of field emergence rate testing, the relevant values ​​of the normal seedling classification ratio can be calculated:

[0065] HB8-2: z = 82 × 0.7606 ≈ 62

[0066] r(x1,z)=62÷0.7506=83%

[0067] r(x2,z)=62÷0.9334=66%

[0068] Compared with the measured values, the actual counts of normal seedling classification ratios were lower than the minimum limit requirements. Therefore, it was comprehensively judged that the germination rate quality of this seed batch HB8-2 was unqualified.

[0069] That is, the current seed germination rate is qualified but the field emergence rate is insufficient, which is a manifestation of insufficient correlation. The actual seed germination rate is 82% in the seed batch, while the field emergence rate is only 41%. The main reason is that the proportion of low-vigorous grains in the seed batch is too high, which is reflected in the insufficient proportion of normal seedlings with medium and high vitality or normal seedlings with medium and high vitality in actual production, and the proportion of normal seedlings with low vitality is too high, resulting in insufficient field emergence rate.

[0070] Practical significance: While ensuring that the seed germination rate meets the current quality standards, adding the minimum limit requirement for the number of medium-high or medium-high vitality seedlings in the normal seedling count of the germination test as a supplementary requirement for quality determination can ensure that the correlation between the wholesale germination rate of the inspected seeds and the field emergence rate remains at a certain level, so as to avoid the shortcomings of the current seed quality determination rules that the wholesale germination rate of seeds is qualified, but the field emergence rate is insufficient due to insufficient seed vitality. It is necessary to effectively ensure the quality of seeds used in agricultural production, reduce agricultural production risks, and provide seed quality testing technical support for high-quality agricultural development.

[0071] On the basis of complying with the current technical requirements for germination rate detection tests, when counting seedlings, normal seedlings are classified and counted according to their growth conditions at the time of counting. Specifically, they are divided into four categories according to their length: high-vigor seedlings, medium-vigor seedlings, low-vigor seedlings and relatively low-vigor seedlings. Through the classification and counting of seedling vitality, on the premise that the proportion of normal seedlings meets or exceeds 85% (with an allowable error of 5%), the proportion of normal seedlings with high or medium-high vitality meets the determined minimum quantity requirements at the same time, so as to comprehensively judge the quality of wholesale seed germination. When judging the quality, while meeting the current germination rate quality standards, it is required that the proportion of normal seedlings with high or medium-high vitality in the counted normal seedling population must meet the minimum quantity requirements given by the institute before the germination rate can be judged as qualified.

[0072] If the percentage of normal seedlings meets or exceeds 85% (with a 5% tolerance), but the percentage of high-vigorous normal seedlings or medium-high-vigorous normal seedlings is lower than the minimum percentage requirement, the germination quality of the seed batch will be judged as unqualified, rather than qualified according to the current germination rate quality judgment rules. In this way, the field emergence rate of the seed batch judged as qualified germination rate under the general germination conditions in the field can be guaranteed to a large extent, and the quality safety of seeds used in agricultural production can be maintained.

[0073] Although the relevant data requirements given in this method are only applicable to the conformity judgment of corn seed germination quality under suitable conditions, the normal seedling vitality classification method and the method of obtaining relevant data requirements corresponding to the field emergence rate requirements are applicable to other major crops.

[0074] The sand preparation method and the amount of wet sand used in the sand bed used in the corn germination test should strictly comply with the method and measurement given in the technical plan to ensure the growth status requirements of the seedlings during the germination counting. The relevant specific data can be promoted and applied to the production of germination beds for corn seed germination tests in different fields, and can ensure the consistency of the environment in different germination repeat boxes during the counting period of the seed germination test. Under the conditions that the test environment meets the requirements of GB / T3543.4--1995 "Regulations for the Inspection of Crop Seeds", the seedlings germinate and grow normally, fully showing the characteristics of the seedlings.

[0075] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in the application. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to specific embodiments, but extends to a variety of modifications still falling within the scope of the appended claims.

[0076] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0077] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, without undue experimentation, the development effort will be a routine task of design, fabrication, and production.

[0078] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A detection method for compensating for the correlation between indoor germination rate and field emergence rate of corn seeds, characterized in that: The following steps are involved: S1. Prepare a germination test sand bed and mix wet sand; S2. determining the number of normal seedlings, classifying and counting the normal seedlings according to their lengths, and obtaining the number of normal seedlings in different length ranges; S3, conducting a field test, calculating the field emergence rate of corn seeds, and obtaining the field test emergence measurement results; S4. After the test, the correlation coefficient was calculated based on the number of normal seedlings in different length ranges and the results of field test seedling emergence determination; S5. Calculate the minimum field emergence rate requirement that meets the correlation requirements based on the national standard requirements for germination rate, and obtain the minimum field emergence rate requirement value; S6. Use the minimum field emergence rate requirement value to reversely calculate the number of seedlings that meet the correlation requirements of normal seedling groups of different lengths, and obtain the minimum number requirement value of groups of different seedling lengths, which serves as a supplement to the indoor germination force test of seed quality and the germination rate compliance judgment.

2. A detection method for compensating for the correlation between indoor germination rate and field emergence rate of corn seeds as claimed in claim 1, characterized in that: The wet sand mixing method is to calculate the amount of water added according to the method of dry sand weight × 0.7 × 0.24 = water consumption, where 0.7 is the seed size difference selection, and 0.24 is the sand saturation; Use a germination box with a specification of 13cmx19cm. The amount of sand used in a box of wet sand bed is 800-900 grams, including 450-500 grams for the bottom layer and 350-400 grams for the covering layer. The allowable error is 50 grams as the sand bed for the corn seed germination test.

3. A detection method for compensating the correlation between indoor germination rate and field emergence rate of corn seeds as claimed in claim 1, characterized in that: The normal seedlings are classified according to their length, and the classification range is: seedlings with a length greater than or equal to 10 cm are high-vigor seedlings, seedlings with a length greater than or equal to 6 cm are medium-to-high-vigor seedlings, seedlings with a length between 10 cm and 6 cm are medium-vigor seedlings, and seedlings with a length between 1 cm and 6 cm are low-vigor seedlings.

4. A detection method for compensating the correlation between indoor germination rate and field emergence rate of corn seeds as claimed in claim 1, characterized in that: The field emergence rate statistics include: selecting a field with uniform, loose and flat soil, when the average ground temperature is above 20°C, according to the requirements of agricultural corn field planting, using mechanical land preparation, 40cm furrowing, 120cm soil opening, 80cm row spacing, 30cm plant spacing, single seed spot sowing, 5-8cm sowing depth, four replicates, and 100 seeds per replicate; After sowing and covering the soil, soak the field with water until the surface is level, and then remove the water after the field is moistened for 30 minutes; 7 to 10 days after sowing, observe the emergence of seedlings in the field. When more than 50% of the seedlings are 10 cm above the soil surface or have two leaves and one heart, count the seedlings and obtain the results of the field test emergence measurement.

5. A detection method for compensating for the correlation between indoor germination rate and field emergence rate of corn seeds as claimed in claim 1, characterized in that: The correlation coefficient calculated based on the normal seedling number of different length ranges and the field test seedling emergence measurement results is expressed as: Where n is the number of seed lots involved, ∑(xy) is the sum of the products of germination rates and field emergence rates of all seed lots, ∑x is the sum of germination rates of all seed lots, and ∑y is the sum of field emergence rates of all seed lots.

6. A detection method for compensating for the correlation between indoor germination rate and field emergence rate of corn seeds as claimed in claim 1, characterized in that: After the test is completed, the corresponding minimum numerical requirement for field emergence rate is determined based on the specific data given by the test, the correlation coefficient calculated by the correlation analysis between different groups and indicators, and the minimum numerical requirement of the current germination rate standard; The minimum number percentage of high-vigor seedling groups or medium- and high-vigor seedling groups in the normal seedling group in the germination test that meets the minimum field emergence rate requirements is calculated separately, which serves as a supplement to the current standard for comprehensive judgment of seed germination quality.

Images