秸秆与氮肥配施对冬小麦生长及养分吸收的影响

Effects of Straw Returning with N Fertilization on Growth and Nutrient Absorption in Winter Wheat in Land Consolidation Region

通过田间试验和室内分析,研究了秸秆还田与氮肥配施对土地整理区冬小麦生长发育及养分吸收的影响。结果表明,与单施氮肥相比,秸秆还田配施等量氮肥的冬小麦叶绿素含量和干物质累积量均较高,根系活力较强,三者分别增加2.9%～6.9%,0.71%～19.77%,1.25%～22.96%;冬小麦对氮磷钾养分的吸收分别提高0.15～3.65,0.06～0.99,0.17～1.17 g/kg。

Through field experiments and laboratory analysis,effects of straw returning with N fertilization on growth and nutrient absorption in winter wheat were studied.The results showed：compared to single N fertilization,the chlorophyll content,root vigor and dry matter accumulation of winter wheat of straw with N fertilization were higher than the single application of the same amount of N fertilizer,increased by 2.9% to 6.9%,1.25% to 22.96%,0.71% to 19.77%.Straw returning with N fertilizer improved NPK absorption of winter wheat,increased respectively by 0.15 g/kg to 3.65 g/kg,0.06 g/kg to 0.99 g/kg,and 0.17 g/kg to 1.17 g/kg than single application of the same dosage of N fertilizer.