Study on Abundance-deficiency Index of Soil Available P and Appropriate P Application Rates for Cucumber in China
GUO Binglin
SUN Hongren
ZHANG Jiping
WANG Shangbo
WANG Zhidong
Abstract：In order to provide scientific basis for soil testing and P application of cucumber in China,a new study method for recommended fertilization system of crop based on soil nutrient abundance-deficiency index(ADI)were employed to investigate the ADI of soil available phosphorus(SAP)and the appropriate P application rates(APAR)for cucumber in China.This study preliminarily established a recommended P application system based on ADI of SAP for cucumber in China.The results showed that the ADI of SAP for cucumber in China for the 1st to 6th level were ≥395,98-395,25-98,6-25,2-6 and＜2 mg/kg,respectively.When the target yield of cucumber was 45-450 t/hm2,the APAR for the abundance-deficiency level of SAP from 1st to 6th were 0,14-330,28-660,42-990,57-1 320 kg/hm2 and 71-1 650 kg/hm2,respectively.The APAR for the P fertilizer use efficiency of 35％,30％,25％,20％and 15％were 0-707,0-825,0-990,0-1 238 kg/hm2 and 0-1 650 kg/hm2,respectively.
Keywords：Cucumbersoil testing and fertilizer recommendationsoil available Pabundance-deficiency indexfertilizer application rate
Publication Date：2025-01-19
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：10( 38-46,70 )