摘要
对陕西关中典型土壤———土进行了连续25 a的定位施肥试验。通过对25年来不同施肥小区土壤肥力差异的分析研究表明:多年连续施肥,可以明显提高土壤中有机质、全氮、全磷、碱解氮、速效磷含量以及作物产量,即单施化肥或有机—无机肥料配合施用,都可以增强土壤养分容量及其供应强度,有利于培肥土壤,提高作物产量,其中又以有机—无机肥料配合施用的效果更好。
Based on the continuous fertilization experiment for 25 years at the same site on Lou soil in central Shannxi, this paper analyzed the difference of fertility in different plots. The results showed that long -term fertilization increased soil O. M. , total N, total P, available N, available P and corn yield evidently. Applying inorganic fertilizer or inorganic fertilizer combined with organic manure could raise soil nutrient capacity and supply intensity, and it was beneficial to meliorate soil and raise crop yield, in which the effect of inorganic fertilizer combined with organic manure was most remarkable.
出处
《干旱地区农业研究》
CSCD
北大核心
2006年第5期64-67,共4页
Agricultural Research in the Arid Areas
基金
陕西省农业攻关项目(2003K03-G8-02)
黄土高原土壤侵蚀与旱地农业国家重点实验室资助项目(10501-138)
关键词
长期施肥
土壤肥力
产量
long-term fertilization
soil fertility
yield
