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我省农民向有使用农盐(氯化钠)作肥料的习惯。据研究,农盐中钠、镁、钾等离子都是植物直接间接营养元素。钠可代换土壤胶体上钾,施用农盐在一定程度上也起到了施钾的效果。旱地作物,施盐后土壤较为湿润,提高了抗旱能力。一般山田亩施农盐10～15斤,可增产稻谷30～50斤,增产率10％左右。苦卤是海水晒盐后余下的母液。钾镁肥是由苦卤蒸干的结晶物。据分析,海水中含有七十多种化学元素,经盐析取去食盐后,其余的元素基本上都遗留在苦卤或钾镁肥中。所以,苦卤和钾镁肥
Farmers in our province have the habit of using agricultural salt (sodium chloride) as fertilizer. According to the research, salt, sodium, magnesium and potassium ions are plant direct indirect nutrient elements. Sodium can replace potassium in soil colloids, and the application of agricultural salt also has the effect of applying potassium to a certain extent. Dry land crops, soil salt more moist, improve the ability of drought. General farmland acres of agricultural salt 10 to 15 pounds, can increase rice 30 to 50 pounds, yield increase of about 10%. Bittern brine is the remaining mother liquor after seawater salt. Potassium magnesium fertilizer is bitter steamed dry crystal. According to analysis, the seawater contains more than seventy kinds of chemical elements, after salt extraction to salt, the rest of the elements are basically left in bitter brine or potassium magnesium fertilizer. So bitter brine and potassium magnesium fertilizer