扦插对盐碱地多年生盐生植物营养发育和生物量质量的影响

IF 0.7 4区 农林科学 Q4 HORTICULTURE
K. B. Doncato, César SB Costa
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引用次数: 0

摘要

维管植物的培养在水产养殖中越来越重要,而盐水共生已以生命周期短的植物(即一年生植物)为中心。然而,多年生盐生植物的栽培可以通过反复扦插和再生,全年产生生物量。研究了不同刈割方式对咸水共生多年生盐生植物雀稗(Paspalum vaginatum)和海角草(Salicornia nei)生长和组织氮吸收的影响。利用凡纳滨对虾养殖的澄清水作为主要的水分和养分来源,建立了营养膜技术(NFT)。在每个试验(28 d)中,在不同的NFT平台上建立3组,每组22株,分别进行不采伐、一次采伐和两次采伐。两种盐生植物的刈割对循环水水质没有影响。随着刈割频率的增加,阴道草分蘖和茎伸长呈增加趋势。每隔28天刈割一次的山楂枝比未刈割一次的山楂枝和每隔14天刈割一次的山楂枝产生的可销售枝条数量多,枝条木质化程度低,枝条大小最小。单株阴道藤和麻豆组织吸收氮量分别为2.27 ~ 2.45 mg/d和4.59 ~ 6.43 mg/d。刈割方式对两种盐生植物生物量中氮的积累没有统计学影响。每28天进行一次收获处理,被认为是两种盐生植物水培生产的最合适做法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of cutting on vegetative development and biomass quality of perennial halophytes grown in saline aquaponics
ABSTRACT The cultivation of vascular plants in aquaculture is becoming increasingly important and saline aquaponics have been centered on plants with a short life cycle (i.e. annual species). However, the cultivation of perennial halophytes can allow to produce biomass year-round by repeated cuttings and regrowth. The present study evaluated the effects of different cutting regimes on the growth and tissue nitrogen uptake of the perennial halophyte Paspalum vaginatum and Salicornia neei cultivated in saline aquaponics. Clarified water from Litopenaeus vannamei cultivation was used as the main source of water and nutrients to grow plants established in Nutrient Film Technique (NFT). In each trial (28 days), three groups of 22 plants were established in different NFT benches and subjected to no cutting, one harvest and two harvests. Cutting regimes applied to both halophytic species did not affect the quality of recirculating water. Tillering and stem elongation of P. vaginatum had increasing trends with augment of cutting frequency. Salicornia neei cut at 28-day intervals produced a larger number of marketable size branches with less lignified shoots than non-cut plants and branchy plants cut every 14 days, which showed the smallest branch size. Individual plants of P. vaginatum and S. neei took up in their tissues between 2.27-2.45 mg/day of N and 4.59-6.43 mg/day of N, respectively. Cutting regimes did not statistically affect the accumulation of nitrogen in the biomass of either halophytic species. One harvest treatment, every 28 days, was considered the most suitable practice for aquaponics production of both halophytes.
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来源期刊
Horticultura Brasileira
Horticultura Brasileira 农林科学-园艺
CiteScore
1.40
自引率
28.60%
发文量
45
审稿时长
4-8 weeks
期刊介绍: The journal Horticultura Brasileira, a quarterly journal, is the Official Publication of the Sociedade de Olericultura do Brasil. Its abbreviated title is Hortic. bras., and it should be used in bibliographies, footnotes, references and bibliographic strips.
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