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为了探求根外追施磷肥对棉花的增产效果,我地在1955年利用了几种不同浓度过磷酸钙溶液对棉花进行了喷射试验;希望通过本试验找出一个对长们区棉花根外追磷肥最合适的浓度,以作本地区棉花生产应用上的依据。
In order to explore the effect of topdressing phosphorus fertilizer on cotton yield, I used several different concentrations of superphosphate solution in 1955 to carry out the spray test on cotton; I hope that through this test, The most suitable concentration of phosphate fertilizer for cotton production in the region based on the application.