|Table of Contents|

Effects of Different Modified Materials on Phosphorus Availability and Its Transformation in Hexi Corridor Area

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年16
Page:
83-91
Research Field:
Publishing date:

Info

Title:
Effects of Different Modified Materials on Phosphorus Availability and Its Transformation in Hexi Corridor Area
Author(s):
TAN Yaru1; XUE Shaoqi1; WANG Zihan1; LI Chen1; ZHANG Yulin1; 2; WANG Xudong1
(1.College of Resources and Environment，Northwest A&F University/Key Lab of Plant Nutrition and the Agri-environment in Northwest China，Ministry of Agriculture，Yangling，Shaanxi 712100；2.Shaanxi Key Laboratory of Land Consolidation，Xi′an，Shaanxi 710075)
Keywords:
available phosphorus; transformation; soil modified materials; irrigated desert soil; Hexi corridor
PACS:
-
DOI:
10.11937/bfyy.20193887
Abstract:
The purpose of this study was to study the effects of different soil modified materials on soil phosphorus (P) availability and transformation.Salinized soil in Hexi corridor was used as the test material.In the case of adding the same amount of fertilizer as (KH2PO4) in the soil，the incubation experiments indoor were conducted using different amounts of sulfur，biological fertilizer，organic fertilizer and wheat straw.The results showed that the content of Olsen P in each treatment decreased rapidly in the early stage (0-20 days) and started to stabilize around 30 days.After 210 days of incubation，the content of Olsen P in soil treated with sulfur，biological fertilizer，organic fertilizer and wheat straw increased by 3.55%，3.74%，4.63% and 5.09%，respectively，compared with the control.With the increase of incubation time，the amount of Ca2-P，Al-P and Ca10-P decreased，while Ca8-P，Fe-P and O-P increased.The difference between Ca8-P，Fe-P in soil with sulfur and control was not significant in the first 150 days.At 210 days，Ca8-P and Fe-P increased by 5.15% and 7.00%，respectively，compared with the control.After 30 days，soil Ca2-P added with organic fertilizer was significantly different from the control，with an increase of 23.75%；Al-P added with organic fertilizer was significant increased by 12.82% at 210 days.At the end of incubation，Ca8-P and Fe-P treated with straw increased by 7.40% and 13.72%，respectively，and Ca10-P and O-P content decreased by 16.25% and 46.86%，respectively，compared with the control.According to the change of P in each component at the end of incubation，the available P in the tested soil was mainly accumulated in the form of Ca8-P.The application of different soil modified materials and phosphate fertilizer in soil could weaken the fixation of P and improve the potential P supply capacity of soil.At the same time，the utilization rate and the return rate of straw was low in Hexi corridor.Under the experimental conditions，the effect of straw was relatively better than other treatments.

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Last Update: 2020-11-23