تأثیر ورمی کمپوست در بهبود تحمل به شوری گیاهچه های لوبیا قرمز رقم درخشان (Phaseolus vulgaris L.)

عبدالله بیک خورمیزی, چی پروانهابریشم, علی گنجعلی, مهدی حمیدی پارسا
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Abstract

In the recent years, increasing production of waste as a result of population growth, increased food consumption, industrial development and urbanization growth, is regarded as a serious challenge. Vermicompost, as an end product of urban waste recycling with proper physicochemical features, can play an effective role in plant growth and development and also in reducing harmful effects of various environmental stresses on plants. For this purpose, a study with the aim of investigating the effects of vermicompost and salinity interactions on morphological traits of bean (Phaseolus vulgaris L. cv. Light Red Kidney) seedlings was performed. The experiment was conducted based on a randomized complete block design, including five different volumetric ratios of vermicompost and sand (0:100; 10:90; 25:75; 50:50 and 75:25), and four levels of salinity (30, 60, 90 and 120 mmol l-1 NaCl), equal to 2.75, 5.50, 8.25 and 11 deciSiemens per meter (dS/m) respectively, along with control (0.00), in three replications. Seeds were cultured in plastic pots and sampling of seedlings was done after 28 days. The results showed that in an environment without stress, vermicompost had significant effect (p ≤ 0.05) on the stem length, internodes number, area and dry weight of leaves, diameter, dry weight and total roots length, while having no significant effect on stem dry weight. The interaction between salinity and vermicompost has significant effect on the stem length, internodes number, the area and dry weight of leaves and dry weight of roots but no significant effect was observed on the stem dry weight, diameter and total roots length. Thus, in the low levels of salinity, all ratios of vermicompost and in high levels of salinity, high ratios of vermicompost can limit the negative effects of salinity on bean seedlings.
近年来,由于人口增长、食品消费增加、工业发展和城市化增长而产生的废物越来越多,被视为一项严重的挑战。蚯蚓堆肥作为城市垃圾回收利用的最终产物,具有适当的理化特性,可以在植物生长发育中发挥有效的作用,也可以减少各种环境胁迫对植物的有害影响。为此,本研究旨在探讨蚯蚓堆肥和盐度相互作用对菜豆(Phaseolus vulgaris L. cv.)形态性状的影响。进行浅红肾(Light Red Kidney)幼苗试验。试验采用完全随机区组设计,采用5种不同体积比的蚯蚓堆肥与砂土(0:100;10:90;25:75;50:50和75:25),盐度(30、60、90和120 mmol l-1 NaCl)四个水平,分别为2.75、5.50、8.25和11 decisiens /m (dS/m),以及对照(0.00),三个重复。种子在塑料盆中培养,28天后取样。结果表明:在无胁迫环境下,蚯蚓堆肥对茎长、节间数、叶片面积、干重、直径、干重、根系总长均有显著影响(p≤0.05),对茎干重无显著影响;盐度与蚯蚓堆肥的交互作用对茎长、节间数、叶面积、干重和根干重有显著影响,但对茎干重、直径和根总长无显著影响。因此,在低盐度条件下,所有比例的蚯蚓堆肥和在高盐度条件下,高比例的蚯蚓堆肥可以限制盐度对豆类幼苗的负面影响。
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