施氮量和种植密度对海岛棉冠层结构和光合特性的影响

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Effects of Nitrogen Application Rate and Planting Density on Canopy Structure and Photosynthetic Characteristics of Sea Island Cotton

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表2 施肥方案

Table 2 Fertilization treatment kg/hm2

处理 Treatment 基肥 Base fertilizer 追肥日期（月-日）Topdressing date (month-day) 总量 Total 06-15 06-20 06-27 07-04 07-11 07-18 07-26 08-02 08-13 08-21 N0 0 0 0 0 0 0 0 0 0 0 0 0 N1 0 0 0 8 16 32 48 32 16 8 0 160 N2 64 0 12.8 25.6 38.4 51.2 51.2 38.4 25.6 12.8 0 320 N3 96 0 38.4 38.4 57.6 57.6 57.6 57.6 38.4 38.4 0 480