Effects of different fertilization gradients and different γ-polyglutamic acid chemical fertilizer synergist levels on turf
The treatments included fertilizer(0g·m-2,20g·m-2,40g·m-2)and different γ-polyglutamic acid fertilizer syner-gist levels(0,0.5％·10L·m-2,1％·10L·m-2,1.5％·10L·m-2).A field experiment was conducted to demonstrated that effects of different fertilization gradients and different γ-polyglutamic acid chemical fertilizer synergist levels on turf.The results show:Or-ganic fertilizer helps to improve turf quality and increase soil organic matter content.Under 20g/m-2 organic fertilization,γ-polyglutamic acid chemical fertilizer synergist increase soil organic matter content.Under 40g/m-2 organic fertilization,there was a negative correlation between the γ-polyglutamic acid chemical fertilizer synergist use levels and soil organic matter content.The results of this reseach provid-eds the important basis for how to use the organic fertilizer and polyamino acid chemical fertilizer synergist in turf maintenance and manage-ment.
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