不同浓度磷钾肥不同时间叶面喷施对马铃薯产量及生理的影响  

Effects of Potassium Phosphate Monobasic with Different Concentrations on Yield and Physiological Indicators of Potato Sprayed at Different Time on Leaves

作　　者：道丽筠 

机构地区：[1]青海乌兰县农业技术推广站,817100

出　　处：《长江蔬菜》2014年第2期53-55,共3页Journal of Changjiang Vegetables

基　　金：国家马铃薯产业技术体系(CARS-10-ES29)

摘　　要：采用双因素通用旋转试验设计,研究磷酸二氢钾的不同喷施浓度(0,0.073%,0.25%,0.427%,0.5%)和不同喷施时间对马铃薯产量和生理的影响。研究结果表明,磷酸二氢钾不同喷施浓度和不同喷施时间可提高马铃薯块茎淀粉、还原糖含量以及块茎产量,但影响有差异;试验最佳喷施浓度为0.25%,最佳喷施时间为初花期后第26,36,46天各喷施1次。Using two-factor general revolving experiment design, we studied the effects of spraying potassium phosphate monobasic with different concentrations （0, 0.073%, 0.25%, 0.427%, 0.5%） on the yield and physiological indicators of potato at different times on leaves. The results showed that, spraying potassium phosphate monobasic could enhance the reducing sugar content, starch content and yield of potato tubers, but different spraying concentrations and spraying times had different effects. Comprehensively, the optimum spraying concentration was 0.25%, and the best spraying times were 26, 36 and 46 days after the early flowering period of potato.

关 键 词：马铃薯 磷钾肥 产量 生理指标 

分 类 号：S143.43[农业科学—肥料学] S532[农业科学—农业基础科学]