秸秆还田配合氮肥施用对小麦产量及分蘖的影响

目的]为了使秸秆还田达到最终增产.方法]开展了2个年度秸秆还田与不同基追比氮肥施用对比试验.结果]在秸秆还田的情况下,当施纯氮210 kg/hm2,基追比5：5时增产效果最显著,施纯氮180 kg/hm2时基追比以7∶3较好.当纯氮180 kg/hm2全部做底肥时,在6个处理中产量最低.结论]研究结果为33°N附近小麦产区制定合理的秸秆还田高产施肥方案提供了参考.

Influence on Wheat Yield and Tiller by Use of Straw-returning with Nitrogen Fertilizer

Objective] The research aimed to make straw turnover realize the final purpose of production increase. Method ] A comparative test about straw turnover and application of nitrogen fertilizer in different ratios in two years was carried out. Result] Under the circumstance of straw turnover, when 210 kg/hm2 nitrogen was used, the increase effect was the most prominent if the ratio was 5： 5. When 180 kg/hm2 nitrogen was used, it was better if the ratio was 7：3. When 180 kg/hm2 nitrogen was all used as base fertilizer, the production was the lowest among the six treatments. Conclusion] The test result provided reference for the wheat belt in 33 degrees north latitude m formulate reasonable plan of straw turnover and fertilization method for high yield.