Changes of Nutrient Absorption,Yield and Quality in Solanum tuberosum L .under Different Potassium Levels
ZHANG Jili
JIAO Feng
ZHANG Xingmei
HE Shuping
YU Lihong
WANG Peng
Abstract：In order to study the changes of nutrient absorption ,yield and quality in Solanum tu-berosum L .under different potassium levels ,a field experiment with randomized block design was conducted ,including 3 potassium treatments (K1 :0 kg/ha ,K2 :75 .00 kg/ha ,and K3 :112 .50 kg/ha) and 3 replications .The results showed that the dry matter accumulation of Solanum tu-berosum L .was the highest in K3 treatment ,which was 42 .16% and 37 .29% higher than K1 and K2 ,respectively ;the nitrogen uptake of K1 ,K2 and K3 treatments reached to 220 .39 ,235 .31 and 306 .46 kg/ha in harvest ;the phosphorus uptake of K3 was 20 .38% higher than that of K2 in harvest ;and the potassium uptake of K3 treatment reached to 204 .48 kg/ha in harvest ,64 .44%and 26 .14% higher than K1 and K2 ,respectively .K3 treatment had the highest yield ,increased by 97 .48% and 44 .47% compared to K1 and K2 .With the increase of potassium amount ,the content of reducing sugar increased ,w hile the vitamin C decreased .T he results suggested that the opti-mum amount of potassium fertilizer was 112 .50 kg/ha for potato in Heilongjiang .
Keywords：potassiumSolanum tuberosum L .nutrient absorptionproductionquality
Publication Date：2013-10-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 19-22 )