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磷酸二氢钾为高浓度磷钾二元复合肥料,含 P_2O_5 50%、K_2O33%左右。烤烟是叶用经济作物,需钾量大,为了摸索磷酸二氢钾在烤烟上的使用价值及其施用方法,以提高烟叶品质,我们从1980年开始,在玉溪做了磷酸二氢钾肥效试验。通过四年试验,初步认为磷酸二氢钾无论做底肥还是作根外迫肥,施入地烟或田烟,均能提高烤烟的产量和质量,其中以每亩4公斤作底肥效果最好。施磷酸二氢钾的地烟产量比对照提高11-31.1%,产值提高24.8%(幅度11.7-41.7%);均价提高0.067元,增加7.4%。
Potassium dihydrogen phosphate is a high concentration of phosphorus and potassium binary compound fertilizer, containing P_2O_5 50%, K_2O33% or so. In order to explore the value of potassium dihydrogen phosphate on flue-cured tobacco and its application method, in order to improve the quality of tobacco leaves, we started to test the potassium dihydrogen phosphate fertilizer effect in Yuxi from 1980 onwards . Through four years of experiments, it is preliminarily considered that potassium dihydrogen phosphate can improve the yield and quality of flue-cured tobacco both for base fertilizer and for outside fertilization, and for tobacco or tobacco to be applied, of which 4 kg per acre is the best. Potassium dihydrogen phosphate production of tobacco increased 11-31.1% over the control, output value increased by 24.8% (range 11.7-41.7%); average price increased 0.067 yuan, an increase of 7.4%.