نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی سابق کارشناسی ارشد، دانشکده علوم کشاورزی دانشگاه گیلان
2 دانشیار دانشکده علوم کشاورزی دانشگاه گیلان
3 پژوهشگر موسسه تحقیقات برنج کشور
4 استاد دانشکده علوم کشاورزی دانشگاه گیلان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
To evaluate the effect of organic fertilizer complements application (Aminol Forte, Fosnutren and Kadostim) on grain yield, milling properties and nitrogen use efficiency of two rice (Oryza sativa L.) cultivars, a field experiment in factorial layout and randomized complete block design with 10 treatments and 3 replications was conducted at Rice Research Institute of Iran in 2009. Treatments included: fertilizer in 5 levels [complete chemical fertilizer (for cv. Khazar: nitrogen 90, phosphorus 45 and potassium 75 kg.ha-1 and for cv. Hashemi: nitrogen 60, phosphorus 30 and potassium 50 kg.ha-1,respectively, complete chemical fertilizer + organic fertilizer complements (Aminol Forte, Fosnutren and Kadostim one l.ha-1 as a foliar application in tillering, booting and milk stages), 50% of chemical fertilizer + organic fertilizer complements, organic fertilizer complements and control (no fertilizer application)] and two rice cultivars (cv. Khazar and Hashemi). Traits that been measured were; grain yield and yield components, morphological characteristics, milling properties and nitrogen use efficiency.Results indicated that experimental treatments had a significant effect on the tillers fertility, number of filled grain. panicle-1, grain yield and 1000 grain weight. In this traits, complete chemical fertilizer and complete chemical fertilizer + organic fertilizer complements treatments had had similar effects and lowest amount obtained from organic fertilizer complements and control (no fertilizer application) treatments. The highest grain yield (5371 kg.ha-1) obtained in complete chemical fertilizer + organic fertilizer complements treatment. Organic fertilizer complement treatment and 50% of chemical fertilizer + organic fertilizer complement treatmentshowed the highest nitrogen uptake efficiency (26.4 kg.kg-1) and nitrogen harvest index (48.3 %), respectively. Results indicated that organic fertilizer complements application, eliminated chemical fertilizers rate that enhanced nitrogen uptake efficiency parameters.
کلیدواژهها [English]