نوع مقاله : مقاله پژوهشی
نویسنده
موسسه تحقیقات پنبه کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، گرگان، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
In recent years, with the increase in cultivation of canola, Cotton Research Institute of Iran began studies to identify appropriate varieties that suitable for planting after canola harvesting. In these studies, the earliness varieties with high yield and good fiber quality is emphasized.Because the Cotton plant needs a lot of heat and light to complement the growth period. So in delayed cotton planting, appropriate growing season is limited. Therefore, in addition to selecting appropriate cultivar, success key in the cultivation of late, are good farm management, especially management of irrigation. Because in delayed cotton cultivation create the balance between vegetative and reproductive growth with irrigation management is very important. Production function or water-yield relationship is appropriate index to optimize water use in cotton cultivation. Cotton production function is different at late planting comparison with normal planting date. For this reason, this experiment was conducted to determine the production function of cotton in the canola-cotton system. After seedling emergence, land was divided into 3*3 m. In middle of each section was placed a tripod and cach can for collecting Irrigation water. The relationship between water-yield of Armaghan and Golestan varieties were determined in the form of and equation respectively. Based on the production function, the highest yield of Armaghan and Golestan varieties as well as 3909 and 3973 kg/ha can be obtained with 1739 and 1832 m3/ha water consumption.
کلیدواژهها [English]