This study aims to provide reference to scientific fertilizer management in jujube-wheat intercropping ecosystem (JIE) by studying spatio-temporal heterogeneity of soil nutrient.Based on the spatio-temporal heterogeneity of JIE,we collected samples from different sites in different growth process of winter wheat.The results showed that the mass fraction of soil organic matter increased with the wheat growing process,the horizontal distribution showed that the soil organic mass fraction reduced with the distance farther away from the tree,and the mass fraction of 0-20 cm layer was higher than the 20-40 cm.The results also showed that soil available N,P,K mass fraction appeared temporal and spatial heterogeneity in JIE.The soil available N,P,K mass fraction decreasing with winter wheat growing process.Horizontal distribution,soil available N,P,K mass fraction increasing with distance from the jujube tree gradually decreased.But in the vertical distribution of soil available N,P,K mass fraction with increase of soil depth was gradually decreased.Thus,the jujube-wheat intercropping ecosystem should added the N,P fertilizer application rate of 20-40 cm soil layer and range from the tree body 150-200 cm,and achieved the role of ease competition of jujube and wheat nutrient.
Jujube-wheat intercropping ecosystemSpatio-temporal heterogeneitySoil organic matterSoil available N,P,KNutrient competition
NETL
NSTL
维普
万方数据
