取沙、壤、粘 3种质地的潮土 ,采用盆栽试验 ,应用Bremmner法测定黑麦不同生育时期土壤酸解氮及各组分氮含量。结果表明 ,3种质地......

Due to the temperature’s controlled characteristic in process of beer fermentation this paper provides the thought of i......