A split plot design experiment based on randomized complete block design (RCBD) with three replications was conducted to compare differences between direct seeded rice and transplanting methods. Different cultivars were "Hashemi", "Ali Kazemi", "Hassani", and "Hybrid Spring 1" in the main plots, and cultivation methods were transplanting, direct seeded in wet lands distribution, as linear and hill in the sub-plots. According to analysis of variance, the effects of cultivars on all yield components (panicle/m2, seed/panicle, and 1000 grain weight), plant height, panicle length, and total tiller were significant, while the effect of cultivation method was significant on the rest of the traits except for grain weight. The largest and least number of seed/panicle was obtained under interaction effect of transplanting method of "Hybrid Spring 1" and direct seeded method as distribution of "Ali Kazemi", respectively. Plant height in hill method of "Hybrid Spring 1" and transplanting method of "Hashemi" appeared to be the highest and lowest, respectively. The largest and least number of tillers and fertile tillers were obtained in direct seeded method of "Hybrid Spring 1" and transplanting method of "Hashemi", respectively. The yield across different varieties was not significant, while different cultivation methods were significant. The most and least yield was seen in transplanting and hill methods, respectively. Yield amount was significant between transplanting and linear methods, but because of 20 to 30% reduction in production cost due to the omission of seedling and transplanting operations, as well as reduction in the length of crop cultivation period in direct seeded method that caused conserved water and energy, a little reduction in direct seeded method will be compensating. Thus, direct seeded method as linear is introduced as an economical method for rice production in this area and "Hybrid Spring 1" has the better compatibility to this method than other varieties.
Key words: Oryza sativa L., wet land, labor saving, cost saving, water saving, time saving.
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