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在潮土和盐化潮土农田进行田间试验.结果表明,亩施磷石膏1000～4000kg对冬小麦均有明显的增产作用,下茬夏玉米利用其后效还可增产50%左右.供试磷石膏中有毒物质低于控制标准,全氟含量为635.7μgg~(-1),水溶性氟仅50.5μgg~(-1),小麦吸氟量仅占其水溶性氟的2～3%,低于粮食氟含量控制标准,因此除饮水水源地保护区和地下水位较高的地方外,可以大量施用磷石膏,如果亩施1000kg再配施4000kg有机肥,可降低地上部重金属和氟含量,对人畜更为安全.
Field experiments were carried out in the alluvial soil and salinized alluvial soil farmland.The results showed that 1000 ~ 4000kg of phosphogypsum of Mushi could obviously increase the yield of winter wheat and the yield of next test could be increased by 50% The toxic substances in gypsum were lower than the control standard, the total fluorine content was 635.7 μg / (-1), the water-soluble fluorine was only 50.5 μg / (-1), and the fluorine absorption of wheat accounted for only 2-3% of the water-soluble fluorine Therefore, in addition to drinking water source protection areas and high groundwater levels, phosphogypsum can be applied in large quantities. If 1,000 kg of Mushi and 4000 kg of organic fertilizer are added together, the contents of heavy metals and fluorine in shoots can be reduced. Livestock and animals more secure.