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 本研究于CECAUFAL的温室中开展香蕉植株盆栽试验，旨在探究其生长组分在两轮盐水灌溉处理下的响应表现。试验采用装载16kg贫养黄色粘壤质土壤（dystrophic yellow argyleous soil）的栽植盆，以电导率（electric conductivity）分别为0.2、1.0、2.0及2.4 dS·m⁻¹的蒸馏水（distillated water）进行灌溉，灌溉方式采用重量法（gravimetric method）。观测结果表明：随着电导率升高，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。