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耕地地力是指耕地的基础能力,由耕地土壤的地形、地貌条件、成土母质特征、农田基础设施及培肥水平、土壤理化性状等综合构成的耕地生产能力,既包括耕地的自然地貌和物理性状,也包括耕地有机质、有效磷、速效钾等多项化学性质。地力下降,主要表现在土壤有机质含量低、养分供应不平衡、酸化严重、生物活性弱,造成耕地综合生产能力低,农业生态系统变得脆弱。长期以来,我国各主要农区,由于不合理耕作、过度种植,同时不重视施
Cultivated land fertility refers to the basic ability of cultivated land. The cultivated land productivity consists of the topography, topographic conditions, characteristics of parent material, farmland infrastructures and fertilization levels, soil physical and chemical properties, etc., including the natural landscape and physical Traits, including arable land organic matter, available phosphorus, available potassium and many other chemical properties. The decrease of soil fertility is mainly caused by the low content of organic matter in soil, unbalanced supply of nutrients, serious acidification and weak biological activity, resulting in low comprehensive productivity of cultivated land and agro-ecological system becoming fragile. For a long time, all major agricultural areas in our country, due to irrational farming, over-cultivation, while not paying attention to facilities