Abstract This paper discusses potassium fertilizer test using the winter potatoes in year 2009～2010 at longhai. The results show that potassium absorbability increases with the increasing of potassium rate; potato has the greatest K uptake rate at prometaphase, after anthesis K uptake rate from soil decreases gradually, most of K that potato tuber needed from the existing K output of stem and leaf, the economic K application is determined to be 14kg with an expected fresh root yield of 2500～2700kg per 667m2, seed tuber virus-free or not has obviously different resistances to chloride stress, in production, according to the seed tuber virus-free or not to determine the application of chlorine-containing chemical fertilizers.
ZHAO Ya-Jing,LI Xiao-Ping,JIANG Zhao-Wei-＊等. Potassium Accumulation and Transportation Characteristics and Rational Application of Potato[J]. Fujian Science and Technology of Rice and Wheat, 2011, 29(3): 19-22.
