缓释肥料在苦瓜上的应用效果初报 |
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作者姓名: | 张发宝 唐拴虎 徐培智 陈建生 黄 旭 |
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作者单位: | 广东省农业科学院土壤肥料研究所 广东广州510640 |
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基金项目: | 国家高性能计算基金;广东省广州市农业科技招标项目;广东省农业科学院科研项目 |
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摘 要: | 采用田间试验的方法研究了混合(非包膜)型缓释肥料在苦瓜上的应用效果。结果表明,缓释肥比专用肥有一定的增产和改善品质的效果,肥效基本达到或超过常规分次施肥。缓释肥2号的增产效果明显,比专用肥处理增产14.9% ̄18.0%,比常规分次施肥增产6.9% ̄8.0%;其苦瓜Vc、粗蛋白含量比专用肥分别提高18.4%和34.9%,而对水溶性糖含量的影响不明显;其氮素农学利用率也比专用肥提高33.8% ̄62.0%。比常规分次施肥处理增加14.3% ̄23.1%。试验结果初步表明缓释肥2号的肥效明显,具有一定应用前景。
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关 键 词: | 苦瓜 缓释肥料 产量 品质 农学利用率 |
Effects of Slow-release Fertilizers on Bitter Gourd ( Momordica charantia ) |
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Authors: | Effects of Slow-release Fertilizers on Bitter Gourd |
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Institution: | Soil and Fertilizer Institute, GAAS, Guangzhou 510640 |
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Abstract: | A two-year field trial was conducted to evaluate the effects of four types of non-coated bulk blend slow-release nutrient fertilizers on the fruit yields and quality of bitter gourd (Momordica charantia L.). The results indicated that slow-release nutrient fertilizer (No. 2) was most effective in increasing fruit yields and improving fruit quality of bitter gourd among the slow-release nutrient fertilizers. Compared with the spilt applications of the specific bulk blend fertilizer and conventional fertilizer, basal application of the slow-release nutrient fertilizer (No. 2) increased the fruit yield of bitter gourd from 14.9% to 18.0% and 6.9% to 8.0%, respectively. Ascorbic acid (Vc) and crude protein contents of the fruits were also increased by 18.4% and 34.8%. However, no differences were observed in water soluble sugar contents of the fruits. In addition, application of the slow-release nutrient fertilizer (No. 2) increased the agronomic nitrogen use efficiency from 33.8% to 62.0%, and 14.3% to 23.1%. The results of this study suggested that the slow-release nutrient fertilizer (No. 2) may have potential as a commercial slow-release fertilizer. |
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Keywords: | Bitter gourd (Momordica charantia L ) Slow-release Fertilizer Yield Quality Agronomic nitrogen use efficiency |
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