مقایسه تاثیر سه نوع مالچ پلیمری و مالچ گیاهی بر برخی خصوصیات فیزیکی خاک

کمالی, نادیا; آذرنیوند, حسین; احمدی, شروین; زارع چاهوکی, محمد علی; صادقی پور, احمد

doi:10.22059/jrwm.2022.104791.745

نوع مقاله : مقاله پژوهشی

نویسندگان

¹ استادیار پژوهش، بخش تحقیقات مرتع، موسسه تحقیقات جنگل‌ها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران

² استاد دانشکده منابع طبیعی دانشگاه تهران

³ استادیار پژوهشگاه پلیمر و پتروشیمی ایران، تهران، ایران

⁴ استادیار دانشکده کویر شناسی، دانشگاه سمنان، سمنان، ایران

https://doi.org/10.22059/jrwm.2022.104791.745

چکیده

این پژوهش به منظور بررسی تاثیر مالچ‌های پلیمری و مالچ گیاهی بر برخی خصوصیات فیزیکی خاک انجام شد. بدین منظور اثر سه نوع پلیمر مصنوعی، پلیمر طبیعی و پلیمر طبیعی- مصنوعی به همراه مالچ گیاهی (لاشبرگ) بر برخی خصوصیات فیزیکی خاک در دو عمق ( 5-0 سانتی‌متر و 30-5 سانتی‌متر) در دو دوره زمانی ( یک هفته و 6 ماه پس از پاشش مالچ‌ها) در قالب طرح پایه کاملاً تصادفی با چهار تکرار مورد بررسی قرار گرفت. کرت‌های آزمایشی 10*10 متر انتخاب و مالچها 2 سانتیمتر سطح خاک را در هر کرت پوشش دادند. نتایج نشان داد که استفاده از مالچ‌ها در هفته اول پاشش، بر روی وزن مخصوص ظاهری (6/3% افزایش در پلیمر مصنوعی)، تخلخل (01/6% افزایش در پلیمر مصنوعی)، دما (52/2% افزایش در مالچ گیاهی و 85/1% کاهش در پلیمر طبیعی) و رطوبت (4/17% افزایش در پلیمر مصنوعی) در لایه 5-0 سانتی‌متری، همچنین درصد رطوبت خاک (67/16% افزایش در پلیمر مصنوعی) در لایه 30-5 سانتی‌متری تاثیرگذار بود، شش ماه پس از شروع آزمایش نیز مالچ‌‌های به کار گرفته شده در وزن مخصوص ظاهری (81/4% کاهش در پلیمر مصنوعی عمق اول/ 12/2% کاهش در پلیمر مصنوعی عمق دوم)، تخلخل (23/8% افزایش در پلیمر مصنوعی عمق اول/ 12/4% افزایش در پلیمر طبیعی- مصنوعی عمق دوم) و درصد رطوبت (53/103% افزایش در پلیمر طبیعی- مصنوعی عمق اول/ 6/48% افزایش در پلیمر طبیعی- مصنوعی عمق دوم) هر دو عمق خاک، همچنین هدایت الکتریکی عمق اول (23/6% کاهش در پلیمر طبیعی- مصنوعی) اختلاف معنی داری نسبت به شاهد ایجاد کردند.

کلیدواژه‌ها

عنوان مقاله [English]

Comparison the effect of three types of polymer mulches and plant mulch on some physical properties of soil

نویسندگان [English]

Nadia Kamali ¹
Hossein Azarnivand ²
Shervin Ahmadi ³
Mohammad Ali Zare Chahouki ²
Ahmad Sadeghipour ⁴

¹ Assistant Professor, Rangeland Research Division, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran.

² Professor,, Natural Resources Faculty, University of Tehran

³ Assistant Professor, Iran Polymer and Petrochemical Institute

⁴ Assistant Professor, faculty of desert studies, Semnan University.

چکیده [English]

This study was conducted to evaluate the effect of polymer mulches and plant mulch on some soil physical properties. For this purpose, effects of synthetic polymer, natural polymer, natural - synthetic polymer, and litter, On some physical properties of soil at two depths (0-5 cm and 5-30 cm) and two time periods in a completely randomized design with four replications was studied. 10*10 meter experimental plots were considered and mulches covered 2 cm of the soil surface in each plot. The results showed that the use of mulches in the first week of applying, affected the bulk density (3.6% increase in synthetic polymer), porosity (6.01% increase in synthetic polymer), temperature (2.52% increase in litter and 1.85 decrease in natural polymer) and humidity (16.67% increase in synthetic polymer) at the layer of 0-5 cm, Soil moisture (16.67% increase in synthetic polymer) was also affected at the depth of 5-30 cm. Six months after the experiment began, mulches were applied, made a significant difference compared to control in the bulk density (4.81% and 2.12% decrease in synthetic polymer for 1st and 2nd layers respectively), porosity (8.23% increase in synthetic polymer for 1st layer and 4.12% increase in natural - synthetic polymer for 2nd layer) and moisture content of both surface and beneath soil (103.53% and 48.6% increase in natural - synthetic polymer for 1st and 2nd layers respectively), also the electrical conductivity of the first depth of soil (6.23% decrease in natural - synthetic polymer) was affected.

کلیدواژه‌ها [English]

acrylic resins
modified cellulose
litter
porosity
soil moisture
soil temperature

مراجع

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نشریه علمی - پژوهشی مرتع و آبخیزداری

مقایسه تاثیر سه نوع مالچ پلیمری و مالچ گیاهی بر برخی خصوصیات فیزیکی خاک

مراجع

مراجع

دوره 75، شماره 2
شهریور 1401
صفحه 169-179

مقایسه تاثیر سه نوع مالچ پلیمری و مالچ گیاهی بر برخی خصوصیات فیزیکی خاک

مراجع

مراجع

دوره 75، شماره 2شهریور 1401صفحه 169-179

دوره 75، شماره 2
شهریور 1401
صفحه 169-179