Effects of Drip Fertigation on Yield and Plant Nutrient Accumulation of Potato
Abstract：A field experiment was carried out to evaluate the effects of liquid fertilizer on the growth, tubers yield, nutrient uptake and accumulation of potato under drip fertilization system. The results obtained were as follows： Under this experiment condition, compared with no liquid fertilizer treatment, the liquid treatment could significantly increase tuber yield of potato, the increase rate was from 15. 47% to 36.26%, the treatment of 450 kg/hm^2 liquid fertilizer got the highest tuber yield. The N, P and K nutrients were absorbed at the whole growth stage and the order of nutrients accumulation was K, N and P. The accumulation of N, P and K of potato plants were increased with the extended of early and mediumterm period, however the variation law of nutrient accumulation was not significant in late growing period. It was the greatest period of N, P and K absorption amount and rate of tuber rapid growth period, the absorption rate was N 67.52mg/plant, P 8.75 mg/plant and K 77.69 mg/plant with everyday respectively.
Keywords：potatodrip fertigationliquid fertilizeryieldnutrient accumulation
Publication Date：2011-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)