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德州地区有大面积的中低产土壤,要使农作物产量进一步提高,必须采取综合措施予以治理,应用磷石膏作为土壤调理剂便是重要措施之一。通过电镜扫描、盆栽、模拟和田间小区试验表明,磷石膏用于中低产土壤,可改善其理化性质,促进农作物生长,提高产量、改善品质和增强抗病能力。施用磷石膏后,农作物内的毒性物质低于食品卫生标准,可以食用或饲用。在施用有机肥和磷石膏的基础上,配合施用复合微肥,可进一步提高农作物的增产效果。大田示范推广表明,磷石膏施用于土壤所产生的经济效益十分显著。
In Texas, there is a large area of middle and low yielding soils. To make the crop yield increase further, comprehensive measures must be taken to deal with it. The application of phosphogypsum as a soil conditioner is one of the important measures. The results of electron microscope scanning, pot experiment, simulation and field plot showed that phosphogypsum could be used in middle and low yield soil to improve its physicochemical properties, promote crop growth, increase yield, improve quality and enhance disease resistance. After the application of phosphogypsum, the toxic substances in crops lower than the food hygiene standards, you can eat or feed. In the application of organic fertilizer and phosphogypsum, based on the application of compound micronutrients, can further increase the yield of crops. Field demonstration shows that the application of phosphogypsum to the soil produced by the economic benefits are significant.