The invention relates to a microorganism water treatment agent in culturing water and a preparation technique thereof, belonging to the technical field of animal farming.
本发明涉及“养殖水体用微生物水质净化剂及制备工艺”，属于动物养殖技术领域。
Seven to ten-day training courses should be given on vegetable-growing and pig-farming, and on the preparation of better food by the cooks.
各地应开办七天至十天为期的种菜训练班、养猪训练班和为着改善伙食的炊事人员训练班。
"Lu Spring and Autumn", "Ji Ji-qiu" set: "(September) slaughter family life, farming land preparation, to give it five.
《吕氏春秋》之中《季秋纪》载：“（九月）命家宰，农事备收，举五种之要。
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