بررسی و مقایسه روش کشت مسطح و پشته‌ای کلزای پاییزه در سیستم آبیاری بارانی

In order to study and comparison of flat and ridge planting methods of winter rapeseed in farms with springler irrigation system, this experiment was conducted in Hamedan Agriculture and Natural Resources Research Center in 2011-2013 cropping seasons. Combination of 4 row spacing (15, 20, 25 and 30 centimeters) with 3 seeding rate (6, 8 and 10 Kg/ha) in flat planting method and check treatment (ridge planting with 2 rows on each ridge using 8 Kg/ha seeding rate), totally 13 treatment were studied in Randomized Complete Block design with three replications. Some important traits such as Plant Height, number of branches per plant, yield components including (number of seed pods per plant, seeds per pod and 1000 seed-weight), and in final, seed yield were measured. Combined analyses of variances were done and treatment means with Duncan’s test were compared.
Year effect on all measured traits was significant. In flat planting, number of branches and pods per plant, 1000-seed weight and seed yield were affected by row spacing but plant height and number of seeds per pod were not affected. Row spacing of 15-25 centimeters produced the highest seed yield. The effect of seeding rate on number of branches and pods per plant were significant, but there were not significant differences for plant height, number of seeds per pod, 1000 seed-weight and seed yield. Using of 6-10 Kg seed per hectare produced equal seed yield. Ridge planting (check treatment) had the least seed yield in comparison with flat planting treatments.