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首页> 外文会议>Second International Conference on Sustainable Agriculture for Food, Energy and Industry Vol.2 >Biological Fertilizers for Sustainable Rice Production
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Biological Fertilizers for Sustainable Rice Production

机译：可持续水稻生产的生物肥料

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Biological nitrogen fixation is an important process in rice farming systems because it is an inexpensive source of nitrogen for increasing the productivity of crops. The nitrogen fixing biological systems such as Azolla, cyanobacteria and legume green manures were able to adopt well under wetland rice field ecological conditions and fixes considerable amounts of nitrogen. The biomass of these biological systems decomposes rapidly in rice soil and supply the nitrogen to rice crop. Besides nitrogen addition, these biofertilizers or biomanures also contributes significant amounts of phosphorus, potassium, sulphur, zinc, iron, molybdenum and other micronutrients. The organic acids released during the mineralization process of the biomass of biomanures would accelerate the phosphorus availability in rice soil. These biological fertilizers or biomanures were known to influence the total soil microbial population such as bacteria, fungi, actinomycetes and also substantially activates the population dynamics of nitrogen fixing free-living bacteria like Azotobacter, Azospirillum and also the free-living symbiotic bacterium such as Rhizobium. It is evidently clear now that the application of biological fertilizer were greatly involved in the accumulation of soil enzymes which directly reflects on soil fertility index. The use of biological fertilizers would reduce the cost of chemical fertilizers involved in crop production. The effective utilization of biological fertilizers for crops will not only provide economic benefits to the farmers but also improves and maintain the soil fertility and sustainability in natural soil ecosystem.
机译：生物固氮是水稻种植系统中的重要过程，因为它是增加作物产量的廉价氮源。固氮生物系统，例如满江红，蓝细菌和豆科绿肥在湿地稻田生态条件下能够很好地利用并固氮。这些生物系统的生物质在水稻土壤中迅速分解，并为水稻作物提供氮。除了添加氮外，这些生物肥料或生物肥料还贡献了大量的磷，钾，硫，锌，铁，钼和其他微量营养素。生物肥料生物量矿化过程中释放的有机酸将加速稻田土壤中磷的利用。已知这些生物肥料或生物肥料会影响土壤中的总微生物种群，例如细菌，真菌，放线菌，并且还能充分激活固氮自由生活细菌（例如固氮菌，偶氮螺旋菌）以及自由生活的共生细菌（例如根瘤菌）的种群动态。 。现在显然很明显，生物肥料的使用极大地参与了土壤酶的积累，这直接反映了土壤肥力指数。生物肥料的使用将减少涉及作物生产的化学肥料的成本。有效地将生物肥料用于农作物不仅会给农民带来经济利益，而且还将改善并保持土壤肥力和天然土壤生态系统的可持续性。

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