土壤供氮能力研究方法进展

METHODS FOR STUDYING SOIL NITROGEN SUPPLY CAPACITY

根据土壤供 N 能力确定合理施肥量,是保证作物高产、提高 N 肥利用率、减少环境污染的基本途径。本文综述了土壤供 N 能力研究中常用的植物吸收法、室内矿化培养法、化学方法、田间原位测定法、总矿化 N 测定和土壤 N 矿化模型等方法,以期为选择合适的土壤供 N 能力研究方法提供依据。

The methods that are commonly used in studying nitrogen supply capacity, including chemical methods, field measurements, measurement of gross mineralization, etc. are systematically summarized in the hope that the work may provide a useful basis for the study on soil N supply capacity.