以下为句子列表：
英文: An optimum planting density must be employed to get a high yield, depending upon soil condition, varietal tillering ability, fertilizer level, number of plants per hill, and planting season.
中文: 获得高产必须采用最适植株密度，视土壤条件、品种分蘖力、肥力水平、每蔸苗数和播种季节而定。
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英文: Initial growth of crop stands can be easily obtained by an increase of planting density or by application of increased level of basal fertilizers.
中文: 作物苗的早期生长很易由提高种植密度或增施基肥获得。
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英文: The experiment of cultural techniques for attaining high yield contained three factors (hybrid, planting density and N application rate) each at two levels, which had eight treatments in total.
中文: 高产栽培技术试验包括三个因子（杂交品种、种植密度和施氮量），每个因子设2个水平，共为8个处理。
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英文: The planting density of 78,000 plants/ha had an average yield increase by 273 kg/ha with increase rate of 3.2% as compared with that of 67,500 plants/ha.
中文: 与种植密度67,500株/公顷比较，种植密度78,000株/公顷平均增产273公斤/公顷，增产幅度3.2%。
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英文: STUDIES ON PLANTING DENSITY AND SYSTEM IN YOUNG SATSUMA ORCHARD
中文: 幼龄温州蜜柑不同栽培方式和密度的效应
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