有机肥氮替代化肥氮对双季晚粳产量的影响

Effect of Organic Fertilizer Nitrogen Replacing Chemical Fertilizer Nitrogen on Yield of Double Cropping Late Japonica Rice

[目的]优化水稻高产、优质的有机无机肥料的配比组合。[方法]通过开展田间试验,研究不同比例有机肥氮替代化肥氮对水稻生育期、分蘖和产量的影响。[结果]在稻草不还田下,采用30%有机氮替代无机氮,产量仅减产1.6%,但有机氮替代无机氮超过50%及以上减产幅度达到了13.1%~42.9%。[结论]适当的有机肥替代无机肥是促进水稻高产稳产的科学施肥模式。

[Objective]The aim of this study was to optimize the ratio of organic and inorganic fertilizers for high yield and high quality of rice.[Method]Through the field experiment,the effects of different proportions of organic fertilizer nitrogen instead of chemical fertilizer nitrogen on rice growth period,tiller and yield were studied.[Result]Under the condition of rice straw not returning to the field,using 30%organic nitrogen fertilizer instead of inorganic nitrogen fertilizer could only reduce the yield by 1.6%,but organic nitrogen fertilizer could replace inorganic nitrogen fertilizer by more than 50%and the yield reduction range could reach 13.1%-42.9%.[Conclusion]It was a scientific fertilization mode to replace inorganic fertilizer with organic fertilizer to promote high and stable yield of rice.