有机肥替代化肥对皖北小麦产量及养分利用率的影响

Effect of Organic Fertilizer Substituting Chemical Fertilizer on Wheat Yield and Nutrient Utilization Rate in Northern Anhui

为了探究化肥减量施用和有机肥替代对皖北小麦产量、养分积累和吸收利用效率的影响,该研究共设置CK(不施肥处理)、UF(单施无机肥处理)、MF1(80%化肥+20%有机肥)、MF2(60%化肥+40%有机肥)、MF3(40%化肥+60%有机肥)等5个处理,对小麦产量、养分吸收及土壤养分含量等指标进行了测定。结果表明:与UF相比,MF1、MF2处理的小麦产量无显著差异,而MF3处理的小麦产量有所降低,MF1则显著提高了小麦的氮肥农学利用率和氮肥偏生产力,MF2、MF3和UF3个处理间无显著差异。此外,有机肥施用显著地提高了土壤有机质和全氮含量,而土壤有效磷和速效钾含量则无显著差异。

In order to investigate the effects of organic fertilizer replacing chemical fertilizer on wheat yield,nutrient accumulation and utilization,five different fertilization patterns,including non-apply fertilizer(CK),inorganic fertilizer(UF),20%organic fertilizer+inorganic fertilizer(MF1),40%organic fertilizer+inorganic fertilizer(MF2),60%organic fertilizer+inorganic fertilizer(MF3),were performed in the wheat field area of Lixin Country,Anhui Province.The results showed that the yield of wheat had no significantly different both in the MF1 and MF2 treatment compared with the UF treatment,but a significantly decrease of yield was observed in MF3 treatment.The MF1 treatment could enhance the agronomic efficiency and partial productivity of nitrogen fertilizer compared with the UF treatment.Moreover,organic fertilizer replacing chemical fertilizer could also significantly enhance the content of organic matter,total nitrogen in soil,while there are no different of available phosphorus and available potassium between UF and MFs.