商品有机肥和无机肥配施对大豆氮素积累及利用效率的影响

Effects of Commercial Manure and Chemical Fertilizer Integration on Nitrogen Accumulation and Use Efficiency in Soybean

文中采用6种施肥处理,有机无机肥配施采用3个比例。通过田间试验,结合室内分析测定,研究了黑龙江地区商品有机肥与无机肥配合施用对大豆氮含量和氮素积累量的影响。结果表明,大豆植株的氮素积累量在整个生育期呈现不断增加的趋势,商品有机肥与无机肥配合施用表现出较高的氮素积累量,但有机无机肥配合施用处理间差异不明显。商品有机肥与无机肥配合施用处理的NTE均高于化肥处理,分别提高了17.72%,23.14%和16.06%。商品有机肥与无机肥配施的各处理的氮肥农学利用率、氮肥生理利用率也均高于纯化肥处理。

With a series of field experiments and chemical analysis, the research investigated the effects of six treatments with three different proportions of commercial manure and chemical fertilizers on soybean nitrogen accumulation and nitrogen efficiency. The results showed that nitrogen accumulation was an up-trend during the whole growing period, the integration of commercial manure and chemical fertilizers had a higher nutrient accumulation, but there were no significant differences between manure and chemical fertilziers. Nitrogen transportation efficiency in the three commercial manure mixed chemical fertilizers was 17.72%, 23.14% and 16.06% higher than that of chemical fertilizers alone respectively. Agronomic nitrogen use efficiency and physiological nitrogen use efficiency were higher than chemical fertilizer alone respectively.