تاثير رقم و تاريخ برداشت بر خصوصيات كمي و كيفي كشت پاييزه چغندرقند در شهرستان كاشمر
محورهای موضوعی : توليد محصولات زراعي
سعيد سبزواري
1
(دانشگاه آزاد اسلامي، واحد نيشابور، دانشجوي كارشناسي ارشد زراعت، نيشابور، ايران )
کلید واژه: چغندرقند پاييزه, درصد قند خالص, ساقه روي , عملكرد قند خالص ,
چکیده مقاله :
به منظور بررسي اثرات رقم و تاريخ برداشت بر خصوصيات كمي و كيفي چغندرقند پاييزه ، آزمايشي در سال زراعي 1389 – 1388 در ايستگاه تحقيقات شهرستان كاشمر انجام شد. اجراي اين طرح بصورت كرت هاي يكبار خرد شده در قالب بلوك هاي كامل تصادفي با چهار تكرار صورت گرفت. كرت هاي اصلي آزمايش شامل چهار رقم (7112 ، SBSI002 ، GIADA و RIZOFORT ) وكرت هاي فرعي شامل سه تاريخ برداشت ( اول ارديبهشت ، بيستم ارديبهشت و دهم خرداد ) بودند. خصوصيات مورد بررسي شامل عملكرد ريشه، ساقه روي ( بولت )، درصد قند ناخالص ، درصد قند خالص، عملكرد قند ناخالص و عملكرد قند خالص براي هر يك ازتاريخ هاي برداشت اندازه گيري گرديد. نتايج نشان داد كه بين ارقام چغندرقند از نظر صفات عملكرد ريشه ، ساقه روي ، درصد قند ناخالص و درصد قند خالص تفاوت بسيار معني داري وجود دارد و رقم GIADA با بيشترين عملكرد ريشه به ميزان 17/49 تن در هكتار و كمترين ميزان ساقه روي مناسب ترين رقم براي منطقه مي باشد. همچنين تاريخ برداشت اثر معني داري بركليه صفات مورد بررسي داشت . اثرات متقابل رقم و تاريخ برداشت در مورد صفت هاي عملكرد ريشه، ساقه روي، درصد قند خالص، درصد قند ناخالص، عملكرد قند خالص و عملكرد قند ناخالص نيز معني دار گرديد. آخرين تاريخ برداشت (دهم خرداد) به دليل حصول بالاترين عملكرد ريشه ، بيشترين درصد قند ناخالص، درصد قند خالص و بيشترين عملكرد قند ناخالص و عملكرد قند خالص، مناسب ترين زمان برداشت چغندرقند پاييزه در منطقه كاشمر مي باشد.
To investigate the effects of cultivar and harvest date on quantitative and qualitative characteristics of autumn sown sugar beet, an experiment was conducted in Kashmar agricultural research station in 1389 - 1388. The experiment was conducted as randomized complete block design with four replications and split plot arrangement. The main plots included four cultivars (7112, SBSI002, GIADA and RIZOFORT) and factors of subplot were three harvest dates (April 20th, May 10th and May 30th). The characteristics included root yield, bolt percentage, sugar content percentage, white sugar content percentage, sugar yield, white sugar yield, for each harvest Dates was measured. Results showed that among varieties of sugar beet, root yield, bolt percentage, sugar content percentage and white sugar content percentage, were different significantly. The Giada was the most suitable cultivar for Kashmar region because of the highest root yield ( 49.17 tons per hectare) and the lowest percent of bolting. All characteristics by harvest date were affected significantly. The interaction effect of cultivar and harvest date were significant on Root yield, Bolt percentage, Sugar content percentage, white sugar content percentage, sugar yield, white sugar yield. For achieving the highest Root yield, Sugar content percentage, white sugar content percentage, sugar yield, white sugar yield, the harvest date of May 30th is recommended for the Kashmar region.
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