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The cultivar Wenjing cultivating seedlings is a stage-by-stage cultivation of 0.5-1.0 mm barley seedlings into 50-70 seeds per 500 g of suitable seedlings. In the first stage, 0.5-1.0 mm seedlings are grown into 0.8-1.5 cm seedlings. After screening, they are evenly dispersed and cultivated into suitable seedlings of about 3 cm in size. The benthic diatoms can grow quickly and the water level increases as the water temperature rises. The specific gravity is maintained at 1.010-1.017, and the pool water is slightly dark brown with diatoms.