干旱地区农业研究2013，Vol.31Issue(3)：112-117,6.
不同钾肥品种对甘肃中部地区马铃薯产量及品质的影响
Effects of different potassium fertilizers on yield and quality of potato in central Gansu Province
摘要
Abstract
In attempt to determine the appropriate variety and amount of potassium fertilizer usage in the process of potato produetion,K2SO4 and KC1 were tested in 2009 at Zhang County,Gansu Province.Above-field height,branch number,economic characters of potato plants and potato yield were analyzed and measured,and quality and economic efficiency of potato were estimated as well.Test results indicated that usage of potassium fertilizer effectively improved plant height,branch number,yield and quality of potato.With same potassium species,potatoes using high dosage of K2O 105 kg· hm-2 had highest tuber size,large and medium-sized potato ratio,yield,dry materials,crude starch and Vc but lowest decaying potato proportion and reducing sugar content.Potatoes using low dosage of K2O 60 kg· hm-2 the highest crude protein level.At same potassium level,branches number,per plant tubers,fresh weight of large and mediumsized potato,large and medium-sized potato ratio,contention of dry material,crude starch,crude protein,and yield of using Potassium Sulfate were higher than that of using Potassium Chloride.On the other hand,the difference of plant height was not significant and the contention of reducing sugar and rotten potato ratio was lower than that of using Potassium Chloride.Therefore,using K2SO4 has more advantages in production of potatoes than using KC1 in central Gansu area.Combined with applications of N 120 kg· hm-2,P2O5 60 kg· hm-2,applying K2O 105 kg· hm-2 improved the yield and quality significantly,and had the best output and the highest net incomes.关键词
硫酸钾/氯化钾/马铃薯/产量/品质/纯收益Key words
potassium sulfate/ potassium chloride/ potato/ yield/ quality/ net income分类
农业科技引用本文复制引用
龚成文,冯守疆,赵欣楠,马忠明,范爱平,杨君林..不同钾肥品种对甘肃中部地区马铃薯产量及品质的影响[J].干旱地区农业研究,2013,31(3):112-117,6.基金项目
国家科技部农业科技成果转化资金项目(2008GB2G100325) （2008GB2G100325）
甘肃省科技厅农业科技成果转化资金项目(0704XCNA011) （0704XCNA011）
