不同滴灌年限小麦土壤养分积累时空变异特征
Spatial and Temporal Variation Characteristics of Soil Nutrient Accumulation in Wheat of Different Drip Irrigation Years
摘要
Abstract
[Objective] In this study, drip irrigation wheat farmland soil for 1 years, 3 years and 5 years was taken as the research object to analyze spatial and temporal distribution of nutrient transport in different positions of drip irrigation belt.[Method]Based on the collection of soil profile samples, combined with continuous monitoring and statistical analysis, the temporal and spatial variations of soil nutrient accumulation were studied.[Result]The soil nutrients in different soil layers of different drip irrigation years showed moderate intensity variation.Some of the alkali hydrolyzable nitrogen and available phosphorus showed weak variability.Coefficient varied between 7.68%-45.6%.In the vertical direction, the content of available nutrients in the soil, except for available potassium, the alkali hydrolyzable nitrogen and available phosphorus decreased gradually from the surface to the bottom.In the horizontal direction, soil alkali hydrolyzable nitrogen and available potassium showed obvious variation in different drip irrigation years, and most of the differences were significant, and most of the nutrient contents presented a trend of increasing first and then decreasing with the increase of the distance from the drip irrigation belt.[Conclusion]The spatial heterogeneity of soil nutrients in winter wheat under drip irrigation can provide a theoretical basis for rational fertilization and crop growth.关键词
冬小麦/不同滴灌年限/土壤剖面养分/时空变异Key words
winter wheat/different drip irrigation years/soil nutrients/spatial and temporal variation分类
农业科技引用本文复制引用
乔江飞,赖宁,耿庆龙,李亚莉,李源,杨昊,陈署晃..不同滴灌年限小麦土壤养分积累时空变异特征[J].新疆农业科学,2017,54(4):667-674,8.基金项目
国家自然科学基金项目"滴灌土壤养分的空间变异及其对春小麦生长特性和产量的影响机制"(41461047) （41461047）
世界银行贷款项目"小麦滴灌节水丰产技术研究与应用"(XJ00Z13002) （XJ00Z13002）
自治区水利专项项目"小麦滴灌水肥一体化集成示范"(2015T25) （2015T25）
中国-挪威国际合作项目"减少环境影响和保障可持续食品安全和粮食安全的创新技术合作研究"(CHN-2152,14-0039)The national natural science fund project"Drip irrigation soil nutrient spatial variation and its mechanism of effects on growth characteristics and yield of spring wheat"(41461047) （CHN-2152,14-0039）
The world bank loan project"Wheat drip irrigation water-saving high technology research and application"(XJ00Z13002) （XJ00Z13002）
Autonomous region water special project"Wheat drip irrigation, fertilization integrated demonstration"(2015T25) （2015T25）
International cooperation project between China and Norway"To reduce environmental impact and the safeguard of sustainable food security and food security of innovation and technology cooperation study"(CHN-2152,14-0039) （CHN-2152,14-0039）
