تأثیر فاصله ردیف و تراکم بوته بر صفات زراعی برنج شمشیری

In order to study the effect of row spacing and plant density on grain yield and its components of rice (cv. Shamshiri), an experiment was laid out using split plot in randomized complete block design with three replications at Agricultural Research Station of Shirvan-Chardavol during 2010-2011 cropping season. Three rows spacing (15, 20 and 25 cm) were arranged as main plot and four plants spacing (3, 4, 5 and 6 plant per hill) were chosen as sub plot. Results showed planting pattern of 5×15 had the highest plant height with the average of 118.63 cm and with increasing in planting pattern to 15×20 result in decreasing in plant height. The number of 6 plants per hill had the highest plant height with the average of 119.54 cm and the number of 3 plants per hill had the lowest plant height with the average of 108.04 cm. the highest paniclelet with 15.52, 1000-grain weight with 26.5 g, grains.panicle-1 with 142.3 grains and grain yield with 7364 kg.ha-1 in planting pattern of 15×20.