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›› 2013, Vol. 49 ›› Issue (2): 21-26.doi: 10.11707/j.1001-7488.20130204

• 论文 • 上一篇    下一篇

黄土丘陵区梨枣树氮、磷、钾施肥效应与施肥模式

刘璇1, 王渭玲1, 徐福利1,2, 刘倩雯1   

  1. 1. 西北农林科技大学生命科学学院 杨凌 712100;2. 西北农林科技大学 中国科学院水利部水土保持研究所 杨凌 712100
  • 收稿日期:2012-04-09 修回日期:2012-12-04 出版日期:2013-02-25 发布日期:2013-02-25
  • 通讯作者: 王渭玲

Effects and Models of N, P, K Fertilization for Ziziphus jujuba cv. Lizao Trees in Loess Hilly Region

Liu Xuan1, Wang Weiling1, Xu Fuli1,2, Liu Qianwen1   

  1. 1. College of Life Sciences, Northwest A & F University Yangling 712100;2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource Northwest A & F University Yangling 712100
  • Received:2012-04-09 Revised:2012-12-04 Online:2013-02-25 Published:2013-02-25

摘要: 采用3因素2次D-饱和最优设计,通过大田试验建立氮、磷、钾施肥量与梨枣产量和品质综合评分的效应函数。结果表明,氮、磷、钾肥对梨枣产量的作用顺序为: 钾肥>磷肥>氮肥; 氮、磷、钾肥对梨枣品质的作用顺序为: 钾肥>氮肥>磷肥。采用频率分析法对各效应函数进行寻优结果表明: 梨枣目标产量在23 000~27 000 kg·hm-2,95%置信区间的优化施肥量为N 272~499 kg·hm-2、P2O5 204~297 kg·hm-2、K2O 243~323 kg·hm-2; 梨枣品质综合评分在85分以上,95%置信区间的优化施肥量为N 407~737 kg·hm-2、P2O5 158~306 kg·hm-2、K2O 285~376 kg·hm-2; 梨枣高产优质的最优施肥量为N 407~499 kg·hm-2、P2O5 204~297 kg·hm-2、K2O 285~323 kg·hm-2

关键词: 梨枣, 产量, 品质, 最优施肥模式

Abstract: A field experiment with three factors D-saturated optimal design was carried out to investigate the effect of nitrogen, phosphorus and potassium fertilizer on yield and quality of pear-jujube (Ziziphus jujuba cv. Lizao)trees in loess hilly region. The results showed that: fertilizer efficiency of N, P, K on the pear-jujube yield was: K>P>N; but on the improved quality was: K>N>P. The frequency analysis showed that if the expected pear-jujube yield is 23 000-27 000 kg·hm-2, the optimal fertilizer rate is needed to be 272-499 kg·hm-2 of N, 204-297 kg·hm-2 of P2O5, and 243-323 kg·hm-2 of K2O; if the expected quality average value is >85, the optimal fertilizer rate is 407-737 kg·hm-2 of N, 158-306 kg·hm-2 of P2O5, and 285-376 kg·hm-2 of K2O. Consequently, the optimal fertilizer application rates for both high yield and high quality are 407-499 kg·hm-2 of N, 204-297 kg·hm-2 of P2O5, and 286-323 kg·hm-2 K2O.

Key words: Ziziphus jujuba cv. Lizao, yield, quality, optimal fertilization model

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