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研究了不同密度农桐间作条件下，土壤养分随时间变化的规律及养分与小麦产量之间的关系，结果表明：不同密度（５ｍ×３０ｍ，５ｍ×４０ｍ和５ｍ×５０ｍ）对Ｆｅ含量有一定影响，而对有机质，Ｎ，Ｐ，Ｋ，Ｍｎ，Ｚｎ和Ｍｇ含量无显著影响；３种间作密度中Ｋ含量随时间变化显著，Ｐ含量在５ｍ×３０ｍ间作密度中随时间变化显著，Ｆｅ和Ｍｇ养分含量在５ｍ×４０ｍ密度中随时间变化显著，而３种间作密度中有机质，Ｎ，Ｍｎ和Ｚｎ含量随时间变化不显著；不同间作密度的土壤养分与小麦产量的关系密切
The relationship between soil nutrient change with time and nutrient and wheat yield was studied under different density of interplanting of Agropyron chinense. The results showed that there was a certain content of Fe with different densities (5m × 30m, 5m × 40m and 5m × 50m) P, K, Mn, Zn and Mg. The content of K in the three intercropping densities changed significantly with time. The content of P in the intercropping density of 5m × 30m changed significantly with time. Fe and The nutrient content of Mg changed significantly with the time in the density of 5m × 40m, but the contents of organic matter, N, Mn and Zn in the three intercropping densities did not change significantly with time. The soil nutrients and wheat yield of different intercropping density were closely related