Effects Of Different Types Of Dryers On Seed Drying Characteristics Of Hybrid Rice

In order to explore the effects of different harvest periods and dryers on the seed vigor of hybrid rice.With 634/Huazhan ? Jingliangyou534,4001S/Huanglizhan ?GuangZhan63S-2/R1128?Ke8S/R889 designed for material,choose has scaled the three types of low temperature grain drying hybrid rice seeds dryer,natural drying,for comparison,the determination of three types of dryers to dry different varieties of seed vigor,detailed observations of seed moisture content and temperature in the process of drying and analyze the change rule of change.The results are as follows1.Due to different drying mechanisms,the three types of dryers have different drying and dewatering rates,and the temperature of seed piles varies greatly.The average dewatering rate of type I is 0.78.The dehydration curve is divided into three stages and the temperature of the seed stack rises steadily.The average dehydration rate of the type II dryer is 0.31,the dehydration curve is uniform,and the temperature of the seed pile rises slowly;the average dehydration rate of the type III dryer is 0.56,and the dehydration curve is divided into four stages.The temperature of the seed pile fluctuates significantly.2.Drying of hybrid rice seeds by three types of dryers is comparable to natural drying.The difference in dehydration rate had no significant effect on the seed germination rate,germination potential,germination index and vigor index of hybrid rice.3.Three types of dryer can be used for drying hybrid rice seeds,fastest ?type dryer drying rate,but poor drying uniformity;The slowest ?type dryer drying rate and drying uniformity is relatively consistent,dust removal ability;?type dryer drying rate in the middle,but GuWen adjustment ability is poor,there are differences in seed germination rate.