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在同时施用两种或两种以上肥料时,为减少施肥次数,避免劳畜力、机械作业的浪费,可以预先将它们混合起来,然后一次施入土壤,达到发挥肥料利用率的最佳效果。一、肥料混合施用的重要性不同作物或同一作物的不同生育期,所需养分的种类、数量及其比例各不相同。单独施用一种肥料,常不能满足各种作物的需求,即使含有几种养分的复合肥料,其固定比例也很难适合所有作物及其各生育期的需求。因此,根据作物需要
When two or more fertilizers are applied at the same time, in order to reduce the number of fertilizers, avoid waste of labor and machinery, and waste of mechanical work, they can be mixed in advance and then applied to the soil once to achieve the best effect of fertilizer utilization. I. The Importance of Mixed Fertilizers The types, amounts, and proportions of nutrients required for different crops or the same growing period of the same crop vary. Applying a single fertilizer alone often fails to meet the needs of a wide range of crops. Even with a compound fertilizer containing several nutrients, the fixed ratio can not easily meet the needs of all crops and their respective growing stages. Therefore, according to crop needs