Growth and absorption of nutrients of banana plants under irrigation with saline Waters

Abstract It was conducted an experiment in greenhouse on the banana plant, aiming to verify the behavior of its growing components under two turns of the salt water irrigation, at the CECAUFAL. It was used vases filled with 16kg of soil (dystrophic yellow argyleous), irrigated with distillated water showing as electric conductivity the values of 0,2, 1,0, 2,0 and 2,4 dS m-1, using the gravimetric method. It was observed that there was a reduction of the growth componentes and of the P content, and an increase of the contents the Na and K with an increasing of the electric conductivity.摘要 本实验于CECAUFAL的温室中针对香蕉植株开展，旨在探究其生长组分在两轮盐水灌溉处理下的响应表现。实验采用装填16kg贫瘠型黄色粘磐土（dystrophic yellow argyleous）的盆栽容器，以重量法供水，使用电导率分别为0.2、1.0、2.0及2.4 dS·m⁻¹的蒸馏水进行灌溉处理。观测结果表明，随着灌溉水电导率的升高，植株生长组分及磷（P）含量均出现下降，而钠（Na）与钾（K）含量则随之上升。