Nghiên cứu mật độ cấy thích hợp cho giống lúa Hương Thanh 10 tại huyện Lạc Sơn, tỉnh Hòa Bình

Abstract

The study aims to determine the appropriate planting densities for Huong Thanh 8 rice variety in Lac Son district, Hoa Binh province. The experiment in the spring crop and summer crop, includes 4 planting densities: 30 hills/m², 35 hills/m², 40 hills/m² and 45 hills/m² and design completely randomized block, repeated 3 times. The results of research showed that: The appropriate rice planting densities for the Huong Thanh 10 variety is 40 hills/m², total growth time, plant height, and flower length, respectively, in the spring crop were 131 days, 102,6 cm, 28,3 cm; in the summer crop were 103 days, 111,4 cm, 27,1 cm and flowering and withering were at point 1 in both crops. Pests and diseases appear at low level, the number of seeds/flower reaches 156 seeds in the spring crop and 132 seeds in the summer crop. The yield real was highest reached 6.82 tons/ha in the spring crop and 4.54 tons/ha in the summer crop. Net profit reached 25.52 million VND/ha in the spring crop and 14.83 million VND/ha in the summer crop. The Huong Thanh 10 rice variety at planting densities of 40 hills/m² is suitable for application in Lac Son district, Hoa Binh province  and in areas with similar environmental conditions.