보리의 시비량 (施肥量) 에 따른 유효분얼 (有效分蘖) 의 양상과 수량

This study was aimed to provide understanding on the eco-physiological response of barley tillers as affected by fertilizer application level. Yield and yield contribution rate of tillers were investigated with the data of field experiments in the former Wheat and Barley Research Institute of Suwon, Korea from September 1982 to July 1984. The 50% and 100% increased rates of fertilizer application were compared to the local recommendation, which is 120·90·70㎏/㏊ for N-P₂O_5-K₂O, to examine tiller dynamics under diverse fertilization scheme. With the increased rates, more mainstem leaves appeared and more effective tillers resulted from C3, 4P, 41. 2P1 and 3PP. Higher number and yield of rains per plant were also observed in the increased rates, though the number of grains and grain yield per ear were slightly lower than the recommended rate. The order of yield contribution by various tillers with the recommended rate and 50~ increment was mainstem, 1, 2, 11, 3, 21, 12, 22, 4 and C, but 1 and 11 contributed more than mainstem and 3 with the 100 increased rate.