The characteristics of acid leaching of brown soil and cinnamon soil were studied using an indoor soil column leaching method with simulated acid rain.
用室内模拟淋洗土柱的方法，对棕壤和褐土的酸淋容特征进行了研究。
In a laboratory incubation experiment, timing change in amount of humic acid(HA) and fulvic acid(FA) was studied in dark-brown soil and paddy soil during corn stalk decomposition.
通过室内培养试验研究了玉米秸秆在暗棕壤和水稻土中分解期间全土及不同结合态胡敏酸、富里酸数量的动态变化。
The poplar growth and soil enzymatic activity was studied as affected by humic acid fertilizer (NHA), which was made by activated brown coal.
利用活化后褐煤腐殖酸为吸附基质制成缓效肥料(NHA)，研究了其对盆栽杨树生长、土壤酶及理化性质的影响。
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