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bird shit (guano) as phosphate rock
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bird shit (guano) as phosphate rock
Encyclopedia
农学
海鸟粪磷肥
释
bird shit (guano) as phosphate rock
海鸟粪磷肥
海鸟排泄的粪便和尸体堆积物,经过自然风化而形成的天然磷肥。又称鸟粪堆积磷。
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