黄土丘陵区梨枣树氮、磷、钾施肥效应与施肥模式

doi:10.11707/j.1001-7488.20130204

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

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

Liu Xuan¹, Wang Weiling¹, Xu Fuli^1,2, Liu Qianwen¹

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

Abstract

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

CLC Number:

S759.39

Liu Xuan;Wang Weiling;Xu Fuli;Liu Qianwen. Effects and Models of N, P, K Fertilization for Ziziphus jujuba cv. Lizao Trees in Loess Hilly Region[J]. , 2013, 49(2): 21-26.

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

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