不同灌溉制度下杨桃品种形成过程中营养物质的积累

D. Rozane, R. D. M. Prado, Betania Vahl de Paula, E. H. Santos, W. Natale, D. A. Amorim, Amanda Hernandes
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引用次数: 1

摘要

杨桃(Averrhoa carambola)树木形成过程中的养分积累可能受到水分状况和栽培品种的影响,但该物种的细节尚不清楚。本研究的目的是评价两种灌溉制度下两种杨桃品种在形成期的养分吸收。试验采用完全随机化设计,小区划分为2个灌溉水平(灌水和不灌水)为小区,2个杨桃品种为小区(‘B-10’和‘金星’),移栽后0 ~ 720天7次采收为小区,6个重复。对杨桃树干和叶片的养分吸收量进行了评价,可以观察到杨桃树干的养分吸收量和平均积累速率随树干形成时期干物质质量的积累而变化。两种灌溉方式下,金星品种和B-10品种的幼苗在720天的养分吸收量不同。在灌溉条件下,金星品种的积累顺序为Ca> K> N> Mg> S> P> Mn> Fe> Zn > B> Cu;不论品种,均以灌水方式积累最多。金星品种平均积累的氮、磷、钾、镁、硫、铁和锰含量较高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Accumulation of nutrients during the formation of star fruit cultivars under different irrigation regimes
Nutrient accumulation during the formation of star fruit (Averrhoa carambola) trees can be affected by the water regime and by the cultivar, but the details are not yet known for this species. The aim of this study was to evaluate the nutrient uptake of two star fruit cultivars in the formation phase under two irrigation regimes. The experiment was developed with a completely randomized design, with subdivided plots, with two irrigation levels (with and without irrigation) as plots, and two star fruit cultivars as subplots ('B-10' and 'Golden Star') and seven collection times from 0 to 720 days after transplanting (DAT) into the field as sub-subplots with six replicates. Nutrient uptake was evaluated in stem and leaves, and it was possible to observe that nutrient uptake and the average accumulation rate followed the dry matter mass accumulation of star fruit trees in formation. Nutrient uptake by shoots at 720 DAT differed for the Golden Star cultivar in the rainfed regime and for the B-10 cultivar in both irrigation regimes. There was no difference and followed the sequence Ca > K > N > Mg > S > P > Mn > Fe > Zn > B > Cu, and for Golden Star cultivar in the irrigated regime, the accumulation sequence was Ca> K> N> Mg> Mn> P> S> Fe> Zn > B> Cu. The highest accumulation occurred in the irrigated regime regardless of cultivar. Golden Star cultivar accumulated, on average, larger amounts of N, P, K, Mg, S, Fe and Mn.
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