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Effect of Native Bentonite on Phosphorus and Potassium Mobilization in Greenhouse Soil(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年04期
Page:
152-154
Research Field:
Publishing date:

Info

Title:
Effect of Native Bentonite on Phosphorus and Potassium Mobilization in Greenhouse Soil
Author(s):
HU Ke-wei
Department of Science and Technology,Liaoning Agricultural Vocation-Technical College,Yingkou,Liaoning 115009
Keywords:
native bentonite; monopotassium phosphate; greenhouse soil; migration and transformation
PACS:
S 143.3
DOI:
-
Abstract:
Taking native bentonite as test material，batch-experiments were conducted to preliminarily study the effect of native bentonite on the unavailable process of water dissolvable phosphorus and potassium in greenhouse soil in order to improve the nutrient efficiency.The results showed that with the bentonite additions，the concentration of water-phosphorus and water-potassium in solution decreased compared with the control,the available potassium and available phosphorus concentrations increased.In greenhouse soil，bentonite increased the available phosphorus concentration and decreased the probability of phosphorus pollution in greenhouse soils with high application of phosphorus fertilizer or high phosphorus concentration.For potassium，native bentonite could be as a sink，which maintained a good potassium concentration.

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Last Update: 2014-08-08