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用含~(15)N有机物料,研究了冬小麦对当季施用和前茬花生施用有机物料中氮素的吸收利用。亩施不同量的有机物料(折纯氮2.5～15kg),当季施用,小麦对有机物料中氮素的吸收利用率为10.92％,氮素在土壤中残留率为61.39％,损失率为27.67％;前茬花生施用表现了同样趋势。小麦植株体总氮中,当季施用和前茬花生施用有机物料供氮率分别为5.37％和3.39％,土壤供氮率分别为94.63％和96.61％。当季或前茬花生施用含氮有机物料,对冬小麦均有增产效果,分别增产8.8％和9.5％。
The nitrogen (N) uptake and utilization of winter wheat in organic matter before and after peanut application were studied by using organic material containing ~ (15) N. Mushi different amount of organic material (pure 2.5-25kg of pure nitrogen), the seasonal application of wheat nitrogen absorption and utilization of organic material was 10.92%, nitrogen in the soil was 61.39%, the loss rate was 27.67 %; Peanut prior to use showed the same trend. The nitrogen supply rate of wheat in total nitrogen was 5.37% and 3.39% respectively, and the nitrogen supply rate of soil was 94.63% and 96.61% respectively. Nitrogen-containing organic material applied to peanut in the previous season or in the previous crop increased the yield of winter wheat by 8.8% and 9.5% respectively.