西芹菜营养元素吸收规律的研究  

NUTRIENT ABSORPTION BY WESTERN CELERY(APIUM GRA VEOLENS VAR.DULCE(MILLER)PERS)

作　　者：孟祥栋[1] 蒋先明[1] 

机构地区：[1]山东农业大学园艺系

出　　处：《山东农业大学学报（自然科学版）》1993年第4期473-478,共6页Journal of Shandong Agricultural University：Natural Science Edition

摘　　要：本试验研究了西芹菜对 N、P、K、Ca、Mg 的吸收规律。单株 N、P、K、Ca、Mg 吸收量分别为3.87、0.93、3.25、2.82、0.46g,其比例为8.3:2.0:6.9:6.0:1.0。N、K、Ca 吸收量迅速增加的转折期都在发棵和产品形成期的开始,此时为施肥关键期。西芹菜刚长成叶子的叶柄中 NO_3-N 含量与植株全 N 含量相关系数为0.784,达极显著水平。叶片 N、Ca、Mg、P 含量较高,而叶柄 K 含量较高。最后根据产量可计算出单位面积各元素吸收量。The quantity of N,P,K,Ca and Mg absorbed by a single plant of western celery was 3.87,0.93,3.25,2.82 and 0.46g with ratio being 8.3∶2.0∶6.9∶6.0∶1.0,respectively.The absorption of N,K,Ca increased rapidly when plants entered into the thriving growing stage.So this stage was the key time Of fertilizer application.The NO_3-N content in the petiole had significant correlation with that in the whole plant(r=0.784).The leaf blade con- tained more N,P,Ca and Mg than the petiole,but the latter contained more K.Absorbed amount of each element per unit can be calculated according to yield.

关 键 词：西芹菜 营养元素 吸收 

分 类 号：S636.301[农业科学—蔬菜学]