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该研究试图量化大豆的根生物量和密度、根瘤、作物生物量和籽粒产量,从而分析作物生长和能量输入(可再生和不可再生)与施用氮磷钾肥和有机肥的关系。观察并记录不施肥、施用氮磷钾肥及氮磷钾+农家肥的生长状况。与施用氮磷钾肥相比,施用氮磷钾+农家肥的根生物量显著增加。根生物量的增长趋势,符合这样一个规律:施用氮磷钾+农家肥根长密度较高。施用氮磷钾+农家肥处理中茎、叶柄和叶片生物量明显大于其他处理。在成熟期大豆的生物量中,茎生物量占29%,叶柄生物量占9%,叶片生物量占17%,豆荚生物量占46%,二次回归模式很好的反应了茎、叶柄和叶片生物量的数据。最大LAI为4.88,在成熟期总生物量为633gm2,施用氮磷钾+农家肥时CGR为18.4g/m2?d。在施用氮磷钾肥和氮磷钾+农家肥处理中,籽粒产量分别增加了72.5%到98.5%,秸秆产量增加56%到94.8%,均高于对照处理。尽管施用氮磷钾+农家肥处理能量输入高于施用氮磷钾肥和对照处理,但是施用氮磷钾+农家肥与施用氮磷钾肥相比具有较多的可再生能源、较大的能量输出和不可再生能源。施用氮磷钾+农家肥处理对不可再生资源的利用效率较高。因此,在大豆生产中氮磷钾肥与有机肥(农家肥)配合施用,是一种可行的营养管理方式。
The study attempted to quantify soybean root biomass and density, nodules, crop biomass and grain yield to analyze the relationship between crop growth and energy inputs (renewable and non-renewable) and the application of NPK fertilizers and organic fertilizers. Observed and recorded without fertilization, the application of nitrogen, phosphorus and potassium and nitrogen, phosphorus, potassium and manure fertilizer growth. Compared with N, P and K fertilizers, the root biomass of N, P and K plus farmyard manure increased significantly. Root biomass growth trend, in line with such a law: the application of N, P and K + farmer root length density higher. The biomass of stems, petioles and leaves in the treatment of N, P, K + farmyard manure was significantly greater than that of other treatments. In mature soybean biomass, stem biomass accounted for 29%, petiole biomass accounted for 9%, leaf biomass accounted for 17%, pod biomass accounted for 46%, quadratic regression model a good response stems, petioles and Leaf biomass data. The maximum LAI was 4.88, the total biomass at maturity was 633gm2, and CGR was 18.4g / m2? D when N, P, K was applied. In NPK fertilizer and NPK + manure treatment, grain yield increased by 72.5% to 98.5% and straw output increased 56% to 94.8%, respectively, which were higher than the control. Although the input of N, P, K fertilizer was higher than that of N, P and K treatments, the application of N, P and K + farmyard manure had more renewable energy than that of N, P and K fertilizers, and the larger energy output Non-renewable energy. The application of N, P, K fertilizer and manure treatment is more efficient for non-renewable resources. Therefore, in the production of soybean NPK and organic fertilizer (manure) with the application, is a viable way of nutrition management.