【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。更多还原

【Abstract】 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.更多还原