干旱地区农业研究2011，Vol.29Issue(4)：199-207,9.
不同保护性耕作对渭北旱塬麦玉轮作田肥力和产量的影响
Effects of different conservation tillage measures on soil fertility,WUE and yield in winter wheat-spring maize rotation field of Weibei Highland
摘要
Abstract
A continuous experiment was conducted in Weibei Highland in 2007'"-"2010 to investigate effects of three soil conservation tillage measures , namely no-tillage (NT ) , sutrsoiling (SS ) and deep-ploughing (DP) , on soil nutrient, water use efficiency (WUE ) and crop yields under the rotation mode of winter wheat~*"spring maize , combined with bah" ance fertilization , traditional fertilization and no (or low) fertilization treatments . The results indicated that, the nutrient of loam increased with the implementation of conservation tillage measures ; the sequence of the soil organic matter content changed from NT>SS>DP at the beginning of the experiment gradually into SS>NT>DP; and the content of alkalHhy- dro nitrogen , available P content and available K in surface soil under balanced fertilization condition was in order of NT >SS>DP, and that under conventional fertilization condition and low (no) fertilization condition was SS>NT>DP, while that in SS treatment under both balanced fertilization and conventional fertilization conditions was the highest one of three different tillage treatments in middle of soil; the WUE and crop yields of rotation field were in order of SS>DP> NT in the same fertilization treatment, and that under BSS (balanced fertilization and sub-soiling) treatment combination was the highest one of 9 treatments, BDP (balanced fertilization and deep-ploughing ) treatment combination was in the second place . No matter combination with any fertilization treatment of the rotation mode of winter wheat spring maize , sub-soiling tillage improved the soil nutrient, fertilizer use efficiency , WUE and crop yield significantly .关键词
渭北旱塬/保护性耕作/轮作作物/土壤养分/水分利用效率/产量Key words
Weibei Highland/conservation tillage/crop rotation/soil nutrient/ water use efficiency/yield分类
农业科技引用本文复制引用
张丽华,李军,贾志宽,刘冰峰,赵洪利,尚金霞..不同保护性耕作对渭北旱塬麦玉轮作田肥力和产量的影响[J].干旱地区农业研究,2011,29(4):199-207,9.基金项目
国家科技支撑计划项目(2006BAD29B03) （2006BAD29B03）
农业公益性行业科研专项经费项目(200803028) （200803028）
国家自然科学基金项目(30771280、31071374) （30771280、31071374）
