摘要
1986~1989年在河南省芝麻主要产区布置了田间试验。结果表明,每生产100kg芝麻种子需要钾素(K2O)6.24~6.68kg。不同生育阶段吸收钾素的比例相差很大,钾肥的增产效果也因年份不同而异。缺钾土壤,其速效钾含量低于12μgg-1,每公顷施用K2O105~120kg作基肥,可获得最大增产效益。
Characteristics of patassium absorption of sesame, amount and method of K applied were studied in Henan province from 1988 to 1989. Results showed that the formation of 100kg sesame grain would need potassium (K2O) 6. 24~6. 68kg.K absorption ofplant at different growth stage was very different. Effect of K fertilizer on yield varied with the climate. Maximun econodrical benefit could be obtained with the application of 105~120kg/hm2 K2O as bassal in the deficient K soil which available K was less than 120ug/g.
出处
《中国油料》
CSCD
北大核心
1996年第4期49-49,共1页
基金
农业部项目
关键词
芝麻
钾肥
施用
吸钾特点
Sesame Potassium application Characteristic absorption