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通过对相同管理措施下的脱毒马铃薯优良品种费乌瑞它进行钾肥(硫酸钾)不同用量的处理试验,结果表明:在当地习惯施肥基础上增施钾肥,明显促进了马铃薯的生长发育,显著改善了马铃薯的各种产量构成因素.提高了产量和商品薯率。马铃薯产量随着钾肥用量的增加而增加,在钾肥用量为30 kg/亩时,马铃薯产量最高,以后再增加钾肥用量,马铃薯产量不增反而下降。因此,合理施用钾肥不仅可以增加产量,还能提高经济效益。
Through the treatment of different dosage of potash fertilizer (potassium sulphate), the test was conducted on the virulent potato variety Varu Rui under the same management measures. The results showed that the application of potassium fertilizer on the basis of the local custom fertilization significantly promoted the growth and development of the potato, Improved various yield components of potatoes, increased yields and commodity potato yields. The yield of potato increased with the increase of potash fertilizer. When the potash fertilizer was 30 kg / mu, the potato yield was the highest, then the potash fertilizer increased later, but the potato yield did not increase but decreased. Therefore, the rational application of potash fertilizer not only can increase production, but also improve economic efficiency.