摘要
在冀东无石灰反应的草甸褐土上施用不同量石膏，花生积累钙素的主要部位均为叶片，其次是茎部；积累镁素的主要部位为叶、茎．其次是仁．花生植株吸收钙素的高峰在结荚期，营养体在花针期，而生殖体在结荚期．施用石膏可显著提高荚果产量，施用３６０ｋｇ／ｈｍ２的增产最高．花生植株及各器官的钙素吸收积累量与石膏用量呈极显著直线相关．荚果钙积累量占全株总钙量的比例随石膏用量的增加而增加．大量施用石膏会加剧Ｃａ２＋和Ｍｇ２＋的拮抗作用，降低植株Ｍｇ２＋浓度，造成隐性缺镁，降低荚果产量．
Abstract The results of field experiment showed that by gypsuming in meadow drab soil with no sensitivity to lime,amount of Ca accumulated of peanut was leaves>stem, while that of Mg was leaves and stem>core. The peak of Ca accumulated of plant was in podding period. Gypsuming could significantly increase pod yield with the optimum amount of application was 360kg/hm2. There was marked linear correlation between Ca absorpted and amount of gypsum applied, but excess of gypsum apllied could aggravate antagonism between Ca2+and Mg2+and reduce Mg2+ concentration of plant and pod yield of Peanut.
出处
《中国油料》
CSCD
北大核心
1996年第2期62-66,共5页
