How to improve the soil sour to agriculture.1. to cultivate rice in irrigation district If the soil has a pH value of less than 4.0, use cement in a ratio of about 1.5 tons per Rai and if the soil has a pH value between 4.0-4.5, use mortar in 1 ton per acres in the County are agriculture, soil pH value of rainfall less than 4.0, use mortar in approximately 2.5 tons per Rai and if the soil has a value between pH 4.0-4.5, use mortar in the rate of 1.5 tons per Rai.Steps to improve the soil for growing rice shoots.1. when the sow plaster, make the plough variable.2. release the water into the NA, and then soak for about 10 days.3. then drain into the wash toxins.4. to release the water into the new Black Lace.
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