以下为句子列表：
英文: Fertigation method, distribution characteristics of moisture and nutrients in soil, the factors affecting optimal nutrient supply to crops, fertilizers selection and amounts, irrigation frequency and equipments of fetigetion were mainly introduced.
中文: 着重讨论了灌溉施肥的方法，水分与养分在土壤的分布特点，作物最佳养分供应的影响因素，肥料的选择和用量，灌溉频率以及设施选用等。
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