| 黄美华1，2，冯 剑3，徐鹏举4，张新明3，王 凯2，贺春喜5，陈 洪6，曹先维2.磷肥用量对广东冬作马铃薯产量、效益及品质的影响[J].广东农业科学,2017,44(3):23-29 |
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磷肥用量对广东冬作马铃薯产量、效益及品质的影响 |
| Effects of different dosages of phosphate fertilizer onyield，economic benefits and quality of winterpotato in Guangdong province |
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| DOI：10.16768/j.issn.1004-874X.2017.03.004 |
| 中文关键词: 冬作马铃薯 磷肥 产量 经济效益 品质 |
| 英文关键词: winter potato phosphate fertilizer yield economic benefits quality |
| 基金项目:国家现代农业产业技术体系专项（CARS-10-ES14）；国家农业科技成果转化资金项目（SQ2013ECE
000016） |
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| 中文摘要: |
| 为明确广东省冬作马铃薯的适宜磷肥用量，设置4 个磷肥用量水平0、45.0、90.0、135.0
kg/hm2，以P0、P1、P2 和P3 表示，在惠东县平海镇采用大田试验研究不同磷肥用量对马铃薯产量、经
济效益、品质及块茎氮磷钾积累量的影响。结果表明：P1 处理块茎总产量（57 576.0 kg/hm2）和商品薯产
量（55 848.7 kg/hm2）均较高，分别比P0 处理显著提高16.2 % 和16.6 %，较P3 处理显著提高8.9 % 和8.5
%；P1 处理块茎总产值和经济效益也较高，分别较P0 处理显著提高16.5 % 和20.9 %，较P3 处理显著提
高8.6 % 和11.3 %；P1 处理淀粉产量、粗蛋白含量和维生素C 含量均较高。不同磷肥用量的块茎氮磷钾含
量和氮磷积累量之间无显著差异。综合试验结果可知，P2O5 45 kg/hm2 是本试验条件下适宜的施磷量。 |
| 英文摘要: |
| In order to determine the suitable application rate of phosphate fertilizer for winter potato in
Guangdong province，four phosphate dosages were designed in the field experiment to probe into the effects of
different dosages of phosphate fertilizer on the yield，economic benefits，quality and NPK accumulation amounts
in potato tubers in Pinghai Town，Huidong County. Four phosphate dosages（treatments） were 0，45.0，90.0 and 135.0 kg/hm2，marked as P0，P1，P2，P3，respectively，with each treatment being replicated three times by using
completely random block design. The related physiological indices were detected after maturing of potato tubers，
the results showed that：（1） Both total tuber yield（ 57 576.0 kg/hm2） and marketable yield（ 55 848.7 kg/hm2）
of P1 treatment were higher，being 16.2% and 16.6% higher than those of P0 treatment，and significantly higher
than those of P3 by 8.9% and 8.5%，respectively；（ 2） Both total tuber output value and economic benefits of P1
treatment were also higher，which significantly increased by 16.5% and 20.9% over P0，and significantly increased
by 8.6% and 11.3% of P3，respectively；（ 3） Higher potato tuber starch production，crude protein content and Vc
level were detected in P1 treatment as well. The results also showed that，no significant differences in N，P and K
contents，N and P accumulation amounts were found among different dosages of phosphate fertilizer. According to
the comprehensive effects of considered treatments on yield，economic benefits and quality indices，45 kg（P2O5）
/hm2 was the suitable application rate of phosphate fertilizer under the experiment conditions. |
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