条件筛选
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Which species should you choose for artificially farming earthworms? These six are all suitable
1. Pheretima guillelmi. Generally 90-250 mm long and 5-10 mm wide, with a bluish-yellow, grayish-green or grayish-blue dorsal side and a grayish-blue dorsal midline. It is currently farmed more in the Jiangsu and Shanghai areas. 2. Pheretima hupeiensis. The body is slender, 70-220 mm long and 3-6 mm wide, with the whole body