土壤肥力及冬小麦产量与生物有机肥的效应研究

[目的]为生物有机肥的推广应用提供依据。[方法]对川农10号施有机肥和生物复合肥,以速效氮、速效磷、速效钾和有机质代表土壤肥力,研究生物有机肥对土壤肥力及冬小麦产量的影响。[结果]施用复合肥的土壤有机质较不施肥对照高8.62%,速效氮高9.81%,速效磷高11.35%,速效钾高3.45%。施用生物有机肥各处理的土壤有机质、速效氮、速效磷、速效钾含量和冬小麦产量较对照和复合肥处理均增加,且随着生物有机肥用量的增加而不同程度地增加。各施肥处理冬小麦的产量均高于对照,增加值范围为13.41%~86.35%,其中施用生物有机肥处理较复合肥处理增加更加突出。[结论]施用生物有机肥明显增加了土壤中速效氮、速效磷、速效钾及有机质含量,提高了土壤供肥能力和冬小麦产量。综合考虑,施用生物有机肥350 kg/hm2具有较好的经济效益。

Study on the Effect of Biological Organic Fertilizer on Soil Fertility and Winter Wheat Yield

The alkali-hydrolytic nitrogen,available phosphorus,available potassium and organic matter being taken as the experimental factors to reflect soil fertility and the number of grains per spike and the thousand-grain-weight being taken as the testing factors to reflect winter wheat yield,the method of field experiment was adopted to study the effect of biological-organic fertilizer on soil fertility and the yield of winter wheat.The result showed that the content of alkali-hydrolytic nitrogen,available phosphorus,available potassium and organic matter increased significantly,the capacity of nutrient supplying in soil and the yield of winter wheat was improved with the application of biologicalorganic fertilizer.Soil fertility and the yield of winter wheat improved with increasing biological-organic fertilizer in fixed range.