نوع مقاله : مقاله پژوهشی
نویسندگان
1 استادیار پژوهش بخش تحقیقات حفاظت خاک و آبخیزداری مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی مازندران، سازمان تحقیقات اموزش و ترویج
2 کارشناس ارشد آبیاری و زهکشی و کارشناس بانک کشاورزی
3 معاون توسعه فناوری، مرکز ترویج و توسعه تکنولوژی هراز، موسسه آموزش و ترویج کشاورزی، سازمان تحقیقات، آموزش و ترویج کشاورزی، محمودآباد
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Importance of rice as a staple crop for feeding of human being is obvious. Besides, water is major input for rice production. Water crisis is one the serious interest for present and future conditions of IRAN. Then, this research conducted for investigation of mid-summer drainage effects on yield, Water consumption and water productivity of Hashemi and Fajr rice cultivars. For obtaining this purpose, a field experiment was carried out as a factorial in basis of randomized complete block design in 3 replications with 5 mid- summer drainage treatments i.e. 0, 3, 5, 7 and 9 in Babolsar. Results showed that the effects of mid- summer drainage and variety on water consumption, Grain yield and water productivity were significant (p<0.01), and mid-summer drainage with 5 days’ duration on both cultivars had the highest water productivity, 0.91 and 1.29 Kg/m3 respectively. Also maximum yield and minimum water consumption resulted for 5 days’ mid-summer drainage treatment. Thus, 5 days’ duration for mid-summer drainage of Paddyfield was recommended for this region.
کلیدواژهها [English]