ارزیابی تنش خشکی و دفن با ماسه بادی بر اجزاء عملکرد کلزای پاییزه و خصوصیات خاک | ||
خشک بوم | ||
مقاله 4، دوره 7، شماره 1، خرداد 1396، صفحه 39-49 اصل مقاله (304.09 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.29252/aridbiom.7.1.39 | ||
نویسندگان | ||
مهدی دهمرده* 1؛ مهرناز زرگری2؛ عیسی خمری3 | ||
1دانشیار، دانشگاه زابل | ||
2کارشناسی ارشد، دانشگاه زابل | ||
3استادیار، دانشگاه زابل | ||
چکیده | ||
خشکی یکی از مهمترین تنشهای محیطی است که رشد گیاه و تولید محصول را مختل میکند. این پژوهش با هدف ارزیابی تاثیر تنش خشکی و ماسه بادی بر عملکرد، اجزاء عملکرد و خصوصیات خاک در کلزای پاییزه در سال زراعی 1393- 1392 در مزرعه آموزشی–پژوهشی پژوهشکده کشاورزی دانشگاه زابل انجام شد. آزمایش به صورت اسپلیت پلات در قالب طرح بلوکهای کامل تصادفی با سه تکرار اجرا شد. عامل اصلی تنش خشکی در سه سطح شامل 50، 100 و 150 میلیمتر تبخیر از سطح تشتک تبخیر و عامل فرعی سطوح مختلف ماسه بادی شامل شاهد، 100 و 200 تن در هکتار در نظر گرفته شد. بیشترین عملکرد دانه (87/460 کیلوگرم در هکتار) از تیمار 200 تن در هکتار ماسه بادی بدست آمد که در مقایسه با تیمار شاهد در حدود 61/29 درصد، افزایش نشان داد. بر این اساس بیشترین دمای خاک در تیمارهای 100 و 150 میلیمتر تبخیر به ترتیب با 5/27 و Cº 3/28 و کمترین افزایش دما در تیمار 50 میلیمتر تبخیر با دمای Cº 3/25 بدست آمد. با کاربرد ماسه بادی، میزان دمای خاک کاهش یافت و بیشترین دمای خاک (Cº 23/28) در تیمار شاهد مشاهده شد که نسبت به تیمار 200 تن در هکتار ماسه بادی، حدود 5/8 درصد افزایش داشت. برهمکنش تنش خشکی و ماسه بادی نشان داد که بیشترین میزان عملکرد دانه در تنش خشکی 50 میلیمتر تبخیر و با کاربرد 200 تن در هکتار ماسه بادی دیده میشود. که نشان دهنده اثر مثبت ماسه بادی در کاهش تبخیر است. | ||
کلیدواژهها | ||
تبخیر؛ دفن ماسه؛ دمای خاک؛ عملکرد دانه | ||
عنوان مقاله [English] | ||
Evaluation of Drought Stress and Buried in Sand on Yield Components of Canola (Brassica napus L.) and Soil Properties | ||
نویسندگان [English] | ||
M. Dahmardeh1؛ M. Zargari2؛ I. Khammari3 | ||
1Associated Professor, University of Zabol | ||
2Master of Science, University of Zabol | ||
3Assistance Professor, University of Zabol | ||
چکیده [English] | ||
Drought is one of the most important environmental stresses that can impair plant growth and crop production. The purpose of Resent paper is to determine the effects of drought stress and Buried by sandon yield, yield components of canola (Brassica napusL.) as well as soil properties. The research was investigated in crop year 2013-14 in the field of Educational Research Institute of University of Zabol. Experiment split-plot in randomized complete block design with three replications. The main plot was drought stress in three levels including; 50, 100 and 150 mm evaporation from evaporation pan and sand buried quantities was considered as the sub – plot in three levels; control, 100 and 200 t/ha. The highest of grain yield (460.87 kg/ha) was obtained from treatment 200 t/hadue to Buried by sand. The result shownthat yield was increased in comparison to the control treatment of about 29.61 percent. The maximum soil temperature shows in treatments of 100mm and 150 mm respectively 27/5cº and 28/3cº evaporation from pan evaporation and the lowest soil temperatures in 50 mm from pan evaporation treatment was obtained 25/3c° .Using sand storm, the soil temperature decreased and the highest soil temperature (28/2c°) was observed in control treatment. The interaction of drought stress and sand storm showed that the highest grain yield in drought stress 50 mm evaporation and the application of sand storm 200 t/ha. This was indicates that the positive effect of sand to reduce evaporation. Keywords: Evaporation; Sand buried; Soil temperature; Seed yield | ||
کلیدواژهها [English] | ||
Evaporation, Sand buried, Soil temperature, Seed yield | ||
مراجع | ||
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