北方淹育水稻土氮素肥力指标评价  

EVALUATION ON NITROGEN FERTILIZER INDEXES OF NORTH SUBMERGIC PADDY SOIL

作　　者：田秀萍[1] 向春阳[1] 赵萍[1] 王丽君 杜吉到[1] 

机构地区：[1]黑龙江省八一农垦大学农学系,鸡西市农业广播学校

出　　处：《黑龙江八一农垦大学学报》1996年第4期36-41,共6页journal of heilongjiang bayi agricultural university

摘　　要：对北方淹育水稻土中．四种有效氮、残留有机氮组分及土壤氮矿化位势在预测土壤供氮能力方面进行了综合性分析和探讨。结果表明，土壤氮矿化位势是预测淹育水稻土供氮能力最好的方法；在化学指标中，碱解扩散法较好，而碱性高锰酸钾法由于其速度快也是可采用的方法之一，并且，上述两种方法还可估测土壤中的氮矿化位势。In the paper,four available nitrogen(N),remnant composition of organic N and potentially mineralizable N (No)in North submergic paddy soil have beenanalysed synthetically and inquired for predicting soil nitrogen potential.The results showed that potentially mineralizable N of soil is the more efficient method for predicting nitrogen potential of submergic paddy soil.NaOH-N is the better method among chemical indexes,and the alkaline KMnO4-N also is a ideal method for its rapidness.In addtion,the two methods can calculate potentially mineralizable N of soil too.

关 键 词：淹育水稻土 有效态氮 肥力 评价 

分 类 号：S155.32[农业科学—土壤学] S158.3[农业科学—农业基础科学]