| 施用生物肥料，镁石灰石，玄武岩可改善马来西亚酸性硫酸盐土壤化学性质与水稻生长状况 |
| |
| 作者姓名： | Q. A. PANHWAR U. A. NAHER O. RADZIAH J. SHAMSHUDDIN I. MOHD RAZI |
| |
| 基金项目： | Supported by the Long-Term Research Grant Scheme （LRGS） Fund for Food Security from Ministry of Education, Malaysia （No. UPM/700-1/3/LRGS）.
ACKNOWLEDGEMENT The authors are grateful to University Putra Malaysia for providing technical support in the study. |
| |
| 摘 要： | Acid sulfate soils are normally not suitable for crop production unless they are appropriately ameliorated. An experiment was conducted in a glasshouse to enhance the growth of rice, variety MR219, planted on an acid sulfate soil using various soil amendments.The soil was collected from Semerak, Kelantan, Malaysia. Ground magnesium limestone（GML）, bio-fertilizer, and basalt（each 4t ha^-1） were added either alone or in combinations into the soil in pots 15 d before transplanting. Nitrogen, P and potash were applied at 150, 30, and 60 kg ha^-1, respectively. Three seven-day-old rice seedlings were transplanted into each pot. The soil had a p H of 3.8 and contained organic C of 21 g kg^-1, N of 1.2 g kg^-1, available P of 192 mg kg^-1, exchangeable K of 0.05 cmolc kg^-1,and exchangeable Al of 4.30 cmol c kg^-1, with low amounts of exchangeable Ca and Mg（0.60 and 0.70 cmol c kg^-1）. Bio-fertilizer treatment in combination with GML resulted in the highest p H of 5.4. The presence of high Al or Fe concentrations in the control soil without amendment severely affected the growth of rice. At 60 d of growth, higher plant heights, tiller numbers and leaf chlorophyll contents were obtained when the bio-fertilizer was applied individually or in combination with GML compared to the control. The presence of beneficial bacteria in bio-fertilizer might produce phytohormones and organic acids that could enhance plant growth and subsequently increase nutrient uptake by rice. Hence, it can be concluded that addition of bio-fertilizer and GML improved rice growth by increasing soil pH which consequently eliminated Al and/or Fe toxicity prevalent in the acid sulfate soil.
|
| 关 键 词： | 酸性硫酸盐土壤 生物肥料 水稻生长 马来西亚 玄武岩 石灰石 化学性质 应用程序 |
| 收稿时间： | 19 February 2014 |
Bio-fertilizer, ground magnesium limestone and basalt applications may improve chemical properties of Malaysian acid sulfate soils and rice growth |
| |
| Q. A. PANHWAR,U. A. NAHER,O. RADZIAH,J. SHAMSHUDDIN,I. MOHD RAZI.Bio-fertilizer, ground magnesium limestone and basalt applications may improve chemical properties of Malaysian acid sulfate soils and rice growth[J].Pedosphere,2014,24(6):827-835. |
| |
| Authors: | Q A PANHWAR U A NAHER O RADZIAH J SHAMSHUDDIN and I MOHD RAZI |
| |
| Institution: | 1Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400 (Malaysia)
2Institute of Tropical Agriculture, Universiti Putra Malaysia, Serdang 43400 (Malaysia)
3Soil Science Division, Bangladesh Rice Research Institute, Gazipur 1701 (Bangladesh) |
| |
| Abstract: | Acid sulfate soils are normally not suitable for crop production unless they are appropriately ameliorated. An experiment was conducted in a glasshouse to enhance the growth of rice, variety MR219, planted on an acid sulfate soil using various soil amendments. The soil was collected from Semerak, Kelantan, Malaysia. Ground magnesium limestone (GML), bio-fertilizer, and basalt (each 4 t ha-1) were added either alone or in combinations into the soil in pots 15 d before transplanting. Nitrogen, P and potash were applied at 150, 30, and 60 kg ha-1, respectively. Three seven-day-old rice seedlings were transplanted into each pot. The soil had a pH of 3.8 and contained organic C of 21 g kg-1, N of 1.2 g kg-1, available P of 192 mg kg-1, exchangeable K of 0.05 cmolc kg-1, and exchangeable Al of 4.30 cmolc kg-1, with low amounts of exchangeable Ca and Mg (0.60 and 0.70 cmolc kg-1). Bio-fertilizer treatment in combination with GML resulted in the highest pH of 5.4. The presence of high Al or Fe concentrations in the control soil without amendment severely affected the growth of rice. At 60 d of growth, higher plant heights, tiller numbers and leaf chlorophyll contents were obtained when the bio-fertilizer was applied individually or in combination with GML compared to the control. The presence of beneficial bacteria in bio-fertilizer might produce phytohormones and organic acids that could enhance plant growth and subsequently increase nutrient uptake by rice. Hence, it can be concluded that addition of bio-fertilizer and GML improved rice growth by increasing soil pH which consequently eliminated Al and/or Fe toxicity prevalent in the acid sulfate soil. |
| |
| Keywords: | Al toxicity amendments beneficial bacteria Fe toxicity indoleacetic acid organic acids |
| 本文献已被 CNKI 维普 ScienceDirect 等数据库收录！ |
| 点击此处可从《土壤圈》浏览原始摘要信息 |
| 点击此处可从《土壤圈》下载免费的PDF全文 |
|
