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为研究秸秆还田条件下小麦氮肥施用方法及秸秆还田调控氮肥对小麦产量及土壤钾形态的影响,通过田间试验,研究了秸秆全量还田条件下氮肥不同基追比调控对小麦产量、土壤不同形态钾含量的影响。结果表明,秸秆还田条件下,氮肥基追比7∶3、6∶4处理的小麦产量最高。从土壤不同形态钾含量来看,氮肥基追比7∶3、6∶4处理的土壤水溶性钾、交换性钾、全钾含量最高。所有处理的非交换性钾差异不大。在本试验条件下,氮肥基追比7∶3、6∶4处理为秸秆全量还田下效果最佳,利于小麦产量提高及增加土壤速效钾及全钾含量。
In order to study the application of nitrogen fertilizer under wheat straw and the effects of straw returning to nitrogen regulation on wheat yield and soil potassium form, the effects of nitrogen and fertilizer on grain yield, Effect of different forms of potassium content. The results showed that under the condition of straw returning, the yield of wheat treated with nitrogenous fertilizer was the highest than that of 7: 3 and 6: 4. From the different forms of soil potassium content point of view, the nitrogen-based chase than the 7: 3,6: 4 treatment of soil water-soluble potassium, exchangeable potassium, potassium content highest. All treatment of non-exchangeable potassium little difference. Under the experimental conditions, nitrogen and base chase than 7: 3, 6: 4 treatment for the best effect of straw under full field, which will benefit wheat yield and increase soil available potassium and total potassium content.