摘要
通过田间试验，对限制地膜小麦单产提高的主要问题———合理群体结构的建成从栽培措施上进行了研究。结果表明：在宁夏灌区生产条件下，地膜小麦最适宜的播种期不应晚于３月３日，最迟不晚于３月１７日；播种深度与密度是调控地膜小麦群体的有效措施，适宜播种深度为５．０ｃｍ，每穴播种粒数为２０粒；在灌水上，应早灌头水，适控第二水，兼顾玉米灌第三水，３水灌溉时间以４月２５日、５月１０日、６月１５日为宜。
The establishment of rational population structure, major factor affecting the unit yield of film-mulched spring wheat, was studied with cultivation measures on the basis of field test. The results show that the optimal seeding time for film-mulched spring wheat should not be later than March 3 and latest March 17 under the production conditions in Ningxia irrigation area; Depth and thickness of seeding are effective approaches for regulating population of film-mulched spring wheat, and proper depth of seeding is 5.0cm and number of seeds per bunch 20 grains; The first irrigation should be as early as possible, the second irrigation be properly controlled and the third irrigation be made taking corn into account. The proper dates for three irrigations are April 25, May 10 and June 15 respectively.
出处
《宁夏农林科技》
1999年第1期1-4,13,共5页
Journal of Ningxia Agriculture and Forestry Science and Technology
关键词
地膜
春小麦
增产技术
Film for mulching
Spring wheat
Yield-increasing technique
