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水培甜瓜对营养液及主要矿质元素的吸收特性

DOI: 10.3321/j.issn:1000-7091.1996.03.020, PP. 101-105

Keywords: 甜瓜,营养液,大量元素

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Abstract:

在DFT栽培条件下,从定植到收获,甜瓜日平均吸收营养液0.41L,定果后10天内出现吸收峰值(1.13L/株),收获前仍维持较高水平。不同生长时期内,甜瓜对钾、钙、镁、磷的吸收变化与甜瓜对营养液的吸收变化基本相似,营养生长时期,吸收量较少,授粉后吸收量急剧增加,在定果后10天内出现吸收峰值,此后急剧减少,但甜瓜对钾的吸收峰值超前一周出现。根据甜瓜对主要大量元素的实际吸收浓度,可以推算甜瓜合适的营养液配方。

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