华东师范大学学报（自然科学版）Issue(4)：77-83,7.DOI:10.3969/j.issn.1000-5641.2025.04.008
腐熟羊粪有机肥配施化肥对青稞田土壤肥力及产量的影响
Effects of decomposed sheep manure combined with chemical fertilizer on the soil fertility and yield of highland barley fields
摘要
Abstract
To study the effects of the combined application of decomposed sheep manure organic fertilizer and chemical fertilizer on the soil fertility and yield of highland barley fields(currently treated with conventional fertilization for highland barley planting in the Lhasa agricultural area),four different treatments were prepared for the field experiment by increasing the application of potassium chloride and decomposed sheep manure,and reducing the amount of urea and diammonium phosphate(DAP).The treatments follow:T1 conventional fertilization(sheep manure 5 250 kg/hm2+urea 180 kg/hm2+DAP 180 kg/hm2),T2(sheep manure 5 250 kg/hm2+urea 150 kg/hm2+DAP 120 kg/hm2+potassium chloride 30 kg/hm2),T3(sheep manure 10 500 kg/hm2+urea 150 kg/hm2+DAP 120 kg/hm2+potassium chloride 30 kg/hm2),and T4(sheep manure 15 750 kg/hm2+urea 135 kg/hm2+DAP 75 kg/hm2+potassium chloride 30 kg/hm2).The results showed that soil organic matter,total nitrogen,and total potassium decreased after harvesting compared with the situation before planting according to different fertilization modes.The available nitrogen,phosphorus,potassium,and pH of T3 increased slightly after harvesting compared with their levels before planting.Total and available phosphorus in T1 also increased after harvesting compared with their levels before planting.The height and biomass of highland barley were higher in the mature stage after applications of T1 and T4 treatments.With an increase in the proportion of decomposed sheep manure instead of chemical fertilizer,the yield of highland barley initially increased and then decreased.When the fertilizer substitution rate for T3 reached 16.67%,the yield of highland barley reached 5 323.65 kg/hm2.Study findings indicate that the combined application of decomposed sheep manure and chemical fertilizer is beneficial for improving the fertilizer supply capacity of soil and increasing the yield of highland barley.This study provides a reference for rational fertilization and the reduction of non-point source pollution in highland barley fields in Tibet.关键词
腐熟羊粪有机肥/青稞/土壤肥力/产量Key words
decomposed sheep manure organic fertilizer/highland barley/soil fertility/yield分类
农业科技引用本文复制引用
宋国英,边巴卓玛,刘国一..腐熟羊粪有机肥配施化肥对青稞田土壤肥力及产量的影响[J].华东师范大学学报（自然科学版）,2025,(4):77-83,7.基金项目
西藏自治区重大科技专项(XZ202201ZD0005G03) （XZ202201ZD0005G03）
西藏自治区重点研发计划(XZ202301ZY0002N). （XZ202301ZY0002N）
