Seed processing program

The main content of the seed processing : remove all kinds of seed impurities, such as broken stems and leaves, husk , soil particles , stones, sclerotia , seed and other crop seeds waste , improve clarity and seed germination rate ; seed drying , the moisture content reaches safe storage standards ; different size and proportion of seed grading achieve precision sowing ; seed treatment with various types of seed treatment , pest and disease prevention in order to achieve and promote crop growth , increase production purposes , At present, the use of seed coating on the seed coating treatment .
The main content of the particular Seed Processing Plant includes the following three main aspects :
1 , seed cleaning
Seeds and other debris have a variety of characteristics. Seed cleaning is based on their different characteristics to distinguish from each other , such as the difference between the broken stems and leaves, husk , sand and other large and seeds , they can easily be removed from the seeds. But other crops seeds or seeds are sometimes mixed with the seeds similar in some characteristics or appearance , which is difficult to separate , but never exactly the same as all the features between the seed and other inclusions, identify their differences , can be separated.
2 , seeds and dried
Seed drying by drying medium ( air , heated air , gas ) for heating the seeds , the use of water to keep the seeds inside surface diffusion and evaporation of surface moisture constantly achieved .
Evaporation of surface moisture of seeds , depending on the size of the air vapor pressure . The partial pressure of water vapor in the air contents indicates the number of vapor , air and water vapor increases with increasing partial pressure of water vapor in the air . A water vapor partial pressure and moisture content is essentially the same arguments . The water vapor partial pressure between the air and the water vapor partial pressure of the seed surface is poor, dry seeds impetus which determines the size of the seed surface evaporation rate. The pressure difference is large , the rate of evaporation of surface moisture seeds quickly . The main factors affecting dry seeds relative humidity, temperature , air velocity , and the physiological state of the seeds themselves seed chemical composition . Seed drying conditions , and temperature, there is a relationship between the relative humidity and air velocity . The higher the temperature , the lower the relative humidity , the higher the air velocity , the drying effect is better ; contrary, the drying effect is poor.
It should be noted here that, when the seed drying , the seeds must ensure vitality , or even to dry seeds , and have lost the sense of dry seeds.
3 , seed coating
Seed coating is the use of adhesive or film-forming agent , a fungicide , insecticide, fertilizer, plant growth regulators , coloring agents non-seed material wrapped on the outside seeds, the seeds into spherical or substantially maintain the original shape to improve stress resistance , disease resistance , speed germination , seedling promote , increase production and improve the quality of a seed of new technologies.