Seed dressing technology of cotton varieties

1. Selection of types of clothes

The formula seed coating agents suitable for coating in the region were selected through community trials and field demonstrations.

2. Seed quality standards before coating

The original species purity is greater than or equal to 99%, the seed purity is greater than or equal to 95%, the clarity is greater than or equal to 99%, the moisture is less than 12%, the germination rate is greater than 80%, the residual acid rate is less than or equal to 0.15%, and the rate of breakage is less than or equal to 7 %.

3. Seed coating method

1 Operate strictly according to the instructions for use of seed coating agents.

2 Some seed coating agents do not contain insecticide components, such as 26% more than foxrocide, no effect on the prevention and treatment of cotton seedling pests, so in the use of the first and the seed ratio of 0.8:100 A Coated with phosphorus coating, piled stuffy and then dry with 26% Duofu Jiamu coat, dry bagging to be broadcast. The second method is to first mix phorate and dofloxacin in a ratio of 0.3 to 0.4:1, mix the liquid and then directly apply the seed coating, and dry the bag to be sowed. If used with a seed coating dryer, it can be bagged directly for broadcast.

3 After the cotton seed has been coated, the moisture content is increased by 3%. Therefore, the coated cotton seed that has not passed the seed coating drying dryer must be dried.

4. Coated seed quality testing

1 Before coating, test whether the germination rate, moisture content, residual acid content, and breakage rate of cotton seed meet the national standards for seed quality. Qualified seed quality is a prerequisite for ensuring the application effect of seed coating agents.

2 The moisture content of the coated seeds should be detected in a timely manner during the coating process. If moisture exceeds the standard, they must be promptly dried until the water content is less than or equal to 12%.

3 According to the seed batch, do a good job on the germination rate of coated seeds.

4 Strict seed coating quality, strict inspection of seed coat coverage and firmness, and ensuring that coated cotton seeds meet the quality standards of coated seeds.


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