Theory of "แกล้งดิน" Royal
King Royal เยี่ยมรา ษฎร in Narathiwat Province in 2002.2524 he found that after induction water from peat swamp area to area farmers use and flood control. Showed that the soil in the area is transformed into a swamp of acid sulfate soil, crop, ineffective.. consider to improve the area with water soaked in tomorrow year benefit of agricultural and provide the most impact on the ecosystem. Modification of an acid sulfate soils1-2 meters. Soil is Iain gray and blue, which is sulfur compounds called compound pyrite (pyrite:FeS2), so when the soil dry substance pyrite reacted with sulfuric acid air release coming out. Make the soil into soil acidity or sour Center for the study of political resulting from the initiative."แกล้งดิน" to study the changes in acidity of the soil, starting from how to turn. "" แกล้งดิน energy by making the soil dry and wet times. To accelerate chemical reactions of the soil.Non sulfur release, soil acidification till a step. "แกล้งดิน sour extreme". It got to the point that plants can not grow. Then find out how to improve soils to crops.
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