تاثیرتراکم بوته بر رابطه آلومتریک ارتفاع بوته و وزن خشک ساقه در گندم

Plant density is an important management factor on crop yield. In order to quantify the production and aging of leaves in main stalk of wheat experiment was conducted in a randomized complete block design in research farm of Gorgan University of Agricultural Sciences and Natural Resources in 2012-13. Treatments consisted of density (50, 100, 200, 350, 500, 650, 800) and varieties were (Kuhdasht and Morvarid). Distance between rows was 20 cm. In this study 4 replicates were used. The results showed increase in plant height against shoot dry weight gain has two stages that, in first stage, increase in plant height was more quickly than stem dry weight. Secondly also observed that the rate of increase in stem dry weight was higher and height had less significant increasing. The regression parameters against the concentration were observed that coefficient a was significant at the one percent level. There was no significant difference in the coefficient b. The results showed that plant height and shoot dry weight of wheat can be quantitatively expressed in terms of equations.