Title: Effects of excessive phosphate fertilizer on growth and nutrient uptake of rape
Abstract: The growth and nutrient uptake of rape was studied under excessive phosphate fertilizer in the pot experiment.The results showed that application of phosphate fertilizer significantly increased the biomass of rape,while there was no yield response when phosphate fertilizer rate increased.The total P in rape shoot and root increased gradually with the increase of phosphate fertilizer rate,but the total N,K remained unchanged.Phosphorus was absorbed luxuriously with excessive rate of phosphate fertilizer.The total Ca,Mg,Zn contents of shoot decreased,while total Fe content increased first and then decreased with the increasing application rate of phosphate fertilizer.There was a negative correlation between the contents of total P and Ca,Zn in rape shoots.The total Ca,Mg contents of rape root did not change with the increasing application rate of phosphate fertilizer,while the total Zn,Fe decreased significantly.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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