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前言近年来,仙游蔗区由于有机肥料施用量的减少及化学氮肥用量的剧增,不但土壤有机质含量下降,土壤酸性增强,而且土壤中有机与无机营养元素的平衡遭到破坏,造成土壤板结,耕性不良,土壤肥力下降,给甘蔗生产带来不利的影响。增施有机肥料,实行农作物合理间、套种与轮作,利用生物固氮等“有机农业”的途径,是培肥土壤,调节土壤养分平衡 Preface In recent years, due to the decrease of organic fertilizer application rate and the sharp increase of chemical nitrogen fertilizer consumption, the area of Xiangyou sugarcane not only decreases the content of soil organic matter but also increases the acidity of soil, and the balance of organic and inorganic nutrient elements in the soil is destroyed, resulting in soil compaction , Poor tillage, decreased soil fertility, adversely affected sugar cane production. The application of organic fertilizers, the implementation of crop reasonable, intercropping and rotation, the use of biological nitrogen fixation “organic agriculture ” approach is to fertilize the soil, regulating soil nutrient balance