Maize seeds are rich in nutrients, large embryos, high natural hybrid rate, and vigorous vigor, which all make it difficult for seed storage. A major difficulty in storage is the large moisture content of the corn seed, which is likely to cause mildew or deterioration in the storage process. In addition, the corn seeds have more immature granules or different maturation periods, resulting in uneven quality of the corn seed.
Maize seed has large original moisture and uneven maturity. There are several layers of loquat leaves surrounded by the ears of corn, and they do not get enough sunlight and dryness on the plants. In the harvest season, the days are short, the sun's heat is small, and the rain is heavy in autumn. Therefore, the original water in the corn seed is generally larger than other crops. The water content of the newly harvested corn is as high as 20% to 30%. During the autumn harvest season, the sunshine is good and the rain is low. Under the circumstances, the corn seed moisture content is also 15% to 22%. Especially in summer sowing maize seed production, tasseling loose powder and silking occur in the midsummer of the three volts, the flowering period and pollination are all affected to varying degrees, it is impossible for two ears of the same plant to pollinate the seeds at the same time, even the same ear, middle and top. Fertilization, nodding, and grouting are not simultaneous, and this biological characteristic makes seed maturity different. In addition, corn has large water content, large grains, and tends to be damaged when threshing. Immature grains and broken grains are more. Such grains are extremely vulnerable to insects and microorganisms in the warehouse, and some are attacked by Aspergillus flavus during storage.
From the above, we can see that before corn seeds are stored, we need to dry the seeds as much as possible, and we can use sun drying or other methods to reduce the moisture content of the corn seeds. In addition, corn seed quality can be greatly different through quality inspection of corn seeds. The corn quality inspection can be divided into the analysis of seed cleanliness, the measurement of seed moisture content, the determination of seed thousand kernel weight and the determination of seed germination rate. The determination of each parameter is particularly scientific instrument. The seed moisture content can be dried by the drying method. The seed grain weight can be determined by the seed counting instrument. The seed germination rate can be passed through the precision seed germination box because the precise seed germination box can provide various environmental parameters required for seed germination; Seed clarity analysis can be done through the Seed Clarity Workbench. These four parameters are four mandatory parameters for seed quality inspection, which are decisive for the determination of seed quality.
The conical Johnson screen is a kind of tubal Johnson screen which has a wide upper part and a narrow lower part.
It is composed of support rods and V-profile wire rolling welded on the special welding machine. We can adopt different material to suit your work condition. The common material are 304, 321, 316 L, 904 L, duplex steel 2205, duplex steel 2207, Monel. etc
Wedge Wire Screen,Conical Johnson Screen,Stainless Steel Conical Johnson Screen,Conical Wedge Wire Johnson Screen
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