| 不同施氮水平对菠萝产量和品质的影响 |
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| 引用本文： | 刘亚男,石伟琦,马海洋,张江周,严程明,陈清.不同施氮水平对菠萝产量和品质的影响[J].广东农业科学,2013,40(18):49-51. |
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| 作者姓名： | 刘亚男 石伟琦 马海洋 张江周 严程明 陈清 |
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| 作者单位： | 1.中国热带农业科学院南亚热带作物研究所/海南省热带作物营养重点实验室(筹)，广东湛江524091；2.中国农业大学资源与环境学院，北京100193 |
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| 摘 要： | 针对菠萝果农施氮量随意性大，存在资源浪费和环境污染的风险，在我国菠萝主产区雷州半岛开展不同施氮水平对巴厘菠萝产量和品质影响的研究，以期为果农氮肥施用提供参考。试验在保证磷、钾供应充足的基础上，设0、150、300、450、600 kg/hm2 5个氮水平，依据产量和品质筛选出高产优质菠萝的合理施氮量。试验结果表明，随着施氮量的增加，菠萝产量呈先增后减的趋势，施氮量为300 kg/hm2时，产量达96.76 t/hm2，显著高于空白对照，增产达25.24%。随着施氮量的增加，菠萝果实的可滴定酸和Vc含量下降，但300 kg/hm2处理的可滴定酸、Vc和可溶性糖含量与150、450 kg/hm2处理无显著差异。综合产量和品质、建议菠萝的最佳施氮量为300 kg/hm2。
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| 关 键 词： | 菠萝 不同施氮水平 产量 品质 |
Influence of different N application levels on yield and fruit quality of pineapple |
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| Abstract: | For the status quo that over-fertilization of N was universal in pineapple cultivation, which leads to resources waste and environmental pollution, we carried out the field trial to study the effects of five different N rates (0, 150, 300, 450, 600 kg/hm2) on the yield and fruit quality of pineapple. The trial was located in Leizhou Peninsula, which was one of the major pineapple production areas. The aim was to estimate the proper N rate required to reach maximum values. Results showed that the pineapple yield increased firstly and then decreased with the increase of N rate. A maximum of 96.76 t/hm2 of fresh fruit was attained with N fertilizer level at 300 kg/hm2. And it was 25.24% more than CK. For the fruit quality, a decrease on titratable acid and vitamin C content and an increase on sugar content were observed as the rate of N fertilizer increased from 150 to 450 kg/hm2, while the differences were not significant. The results suggested that 300 kg/hm2 was the best N rate to attain high yield and good quality for pineapple. |
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| Keywords: | pineapple different N rates yield quality |
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