بهترشدن برخی ویژگی‌های خاک و پوشش گیاهی پی‌آمد آبیاری سیلابی در جهان‌آباد تربت‌جام

نوع مقاله: مقاله پژوهشی

نویسندگان

1 مدرس مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی خراسان رضوی، سازمان تحقیقات، آموزش و ترویج کشاورزی، مشهد، ایران

2 محقق مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی خراسان رضوی، سازمان تحقیقات، آموزش و ترویج کشاورزی، مشهد، ایران

3 استادیار آموزشی مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی خراسان رضوی، سازمان تحقیقات، آموزش و ترویج کشاورزی، مشهد، ایران

چکیده

ویژگ یهای کمی و کیفی رسو بها و نم کهای آمده از سیل می تواند موجب تغ ییر در خاک و پوشش گیاهی شود. پس از تهیه نقشه ی منطقه، خاک و پوشش گیاهی در عرص هی پخش و شاهد بررسی شد. نمون هگیری و تحلیل شیمیایی خاک در قالب طرح فاکتوریل با سه عامل وضعیت عرص هی پخش، دوری و نزدیکی به پشت هها و عمق خاک ) 20 – 0( سانت یمتری و ) 60 – 20 ( سانت یمتری در سه تکرار، و انداز هگیری وضعیت، گرایش و تولید گیاهان در دو مرحله )قبل و بعد از پخ شسیلاب( ب هترتیب، از روش چهار عاملی، ترازوی گرایش و قطع و توزین انجام شد. نتایج نشان داد که پخش سیلاب بر خاک اثرگذار بود، ب هطوری که نسبت جذ بسدیم، سدیم، کلسیم و آهک در هر سه وضعیت پخش سیلاب درمقایسه با شاهد افزایش معن یداری نشان داد، و بافت خاک در برخی نقاط سنگی نتر شد. مقدار سدیم و نسبت جذب سدیم نیز با افزایش عمق خاک افزایش یافت که سبب شوری اندک خاک گردید. نتایج بررس یهای پوشش گیاهی نشان داد که وضعیت مرتع قبل از انجام پخ شسیلاب فقیر، گرایش آن منفی، و تولید آن 40 کیلوگرم گیاه خشک در هکتار شد، در حالی که بعد از اجرای پخش سیلاب وضعیت مرتع متوسط، گرایش آن مثبت و ظرفیت تولید آن به 110 کیلوگرم گیاه خشک در هکتار رسید.

کلیدواژه‌ها


عنوان مقاله [English]

Improvement in Some Soil Characteristics and Vegetative Cover through Spate Irrigation in Jahanabad TorbateJam

نویسندگان [English]

  • Masoud Derakhshi 1
  • Mehrnoush Eskandari Torbaghan 2
  • Alireza Ghasemi Arian 3
  • Alireza NejadMohammad Nameghi 1
1 Researcher, Khorasan Razavi Agricultural and Natural Resources Research and Education Center, AREEO, Mashhad, Iran
2 Researcher, Khorasan Razavi Agricultural and Natural Resources Research and Education Center, AREEO, Mashhad, Iran
3 Assistant Professor, Khorasan Razavi Agricultural and Natural Resources Research and Education Center, AREEO, Mashhad, Iran
چکیده [English]

Quantitative and qualitative characteristics of the suspended load may affect soil and vegetation. After drawing an area map, soil and vegetation were examined at both floodwater spreaders and control areas. The soil was sampled and examined by chemical analysis as three-factor randomized complete block design including condition of basin, distance and proximity to the banks, depth of soil 0–20 cm and 20–60 cm in triplicate. Condition, trends and plant production in two stages (before and after floodwater spreading) were studied by the four-factors method, trend balance and clipping and weighing, respectively. Results showed that spate irrigation affected soil sodium absorption ratio (SAR), sodium, calcium and CaCo3 with a significant increase compared to control in all three phases of soil texture became heaveier in some localities. SAR significantly increased with depth. An Increase in EC and SAR caused little salinity and sodicity, respectively. The rangeland condition, which was poor prior to spate irrigation (40 kg dry matter per hectare per year), and Showing a negative trend, improved to the intermediate category, it was with a positive trend and production of 110 kg dry matter per hectare per year after spate irrigation.

کلیدواژه‌ها [English]

  • Effect of sediment
  • plant production
  • range land condition
  • soil texture

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