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WENG Ding-he, LI Xiao-ping, WANG Hai-qin, JIANG Zhao-wei. Potassium absorption and fertilization of potatoes[J]. Fujian Journal of Agricultural Sciences, 2010, 25(3): 319-324.
Citation:
WENG Ding-he, LI Xiao-ping, WANG Hai-qin, JIANG Zhao-wei. Potassium absorption and fertilization of potatoes[J]. Fujian Journal of Agricultural Sciences, 2010, 25(3): 319-324.
WENG Ding-he, LI Xiao-ping, WANG Hai-qin, JIANG Zhao-wei. Potassium absorption and fertilization of potatoes[J]. Fujian Journal of Agricultural Sciences, 2010, 25(3): 319-324.
Citation:
WENG Ding-he, LI Xiao-ping, WANG Hai-qin, JIANG Zhao-wei. Potassium absorption and fertilization of potatoes[J]. Fujian Journal of Agricultural Sciences, 2010, 25(3): 319-324.
To understand the potassium(K)absorption and fertilization of potatoes,an experiment was conducted in Southeast Fujian using the winter potatoes.The results showed that the K accumulation in the entire plant and tuber of the potatoes was a Logistic dynamic curve.The vigorous stage of the absorption occurred during the 14d before squaring to the 15d prior to maturation.In the late stage,the tuber acquired K primarily from the leaves.The potato yield correlated to the amount of K application parabolically.Under the test conditions,the economic K application was determined to be 201.6 kghm-2 with an expected yield of 37424 kghm-2.On the average,to produce 1 000 kg tubers 5.4 kg of K fertilization were required.