Title: Preparation of a P-rich Soil Amendment and Its Effect on the Pot Growth of White Mustard
Abstract:A pot growing test was conducted to evaluate the amelioration effect of the P-rich soil amendment on acid soil and pot growth effect of the white mustard. The P-rich soil amendment was prepared by cal...A pot growing test was conducted to evaluate the amelioration effect of the P-rich soil amendment on acid soil and pot growth effect of the white mustard. The P-rich soil amendment was prepared by calcinating a mixture of low-grade rock phosphate and dolomite with a fusing agent of CaSO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> . The amendment was rich in P, Si, Ca, Mg and S nutrient elements and displayed an alkalescent. The contents of nutrient elements in the soil amendment dissolved in 0.1 mol·L <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> citric acid solution were 8.94% P <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">5</sub> , 19.82% CaO, 3.97% MgO, 13.37% SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> and 0.86% SO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2-</sup> . Its pH value was 9.16. In the pot growing, the soil amendment was applied to the pot at four application rates, 1 g/Kg(L <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> ), 2 g/Kg(L <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ), 3 g/Kg(L <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> ), 4 g/Kg(L <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> ) with 7 treatments and control (CK). The results of white mustard growth for 2 months indicated that applying the P-rich soil amendment could effectively increase the seeding emergence, the whole plant height, the stem thickness, the root length, the dry and wet biomass. The optimized application rate of the P-rich soil amendment was 3g·kg <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> . The growth rate of biomass (wet weight) reached 13.52%~115.80%. The experimental results also suggested that the P-rich soil amendment could increase the biomass of white mustard and ameliorate the acid soil, and improve the content of the available phosphorus in the soil.Read More
Publication Year: 2012
Publication Date: 2012-05-01
Language: en
Type: article
Indexed In: ['crossref']
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