宁夏引黄灌区棉花播种期和密度试验初报

Preliminary Study of Seeding Time and Density of Cotton in Irrigated Area of Ningxia

对宁夏引黄灌区棉花适宜播种期和密度的研究与分析结果表明:棉花在该地区较佳的播种期是4月20～27日,较合理的密度范围是1.1～1.3万株/亩。

Study and analysis of suitable Seeding time and density of cotton in ir- rigated area of Ningxia Shows that the good sowing time for cotton in the area is April 20- 27 and the rational density is 11000-13000 plants per ma.