cow oak

1. Fertilizing new organic matter can increase the active coefficient of organic matter in the soil, the average is about 16%, the order of the active coefficient is cow manure> naked oak stalk> pea stalk;
   新施入有机物（肥）料可明显提高土壤有机质活性系数，平均提高16%左右，腐殖质活性顺序依次为牛粪>莜麦秸>豌豆秸。

noun

1. medium to large deciduous tree of the eastern United States

   Synonym:    basket oakQuercus prinusQuercus montana