2种德国鸢尾的干物质积累及吸肥特性  

Dry Matter Accumulation and Nutrient Uptake Characteristics of Two Kinds of Iris germanica

作　　者：王文强[1] 董然[1] 

机构地区：[1]吉林农业大学,长春130118

出　　处：《东北林业大学学报》2013年第2期70-73,79,共5页Journal of Northeast Forestry University

基　　金：吉林省科技支撑项目(20100259)

摘　　要：以2种德国鸢尾血石、白与黄为对象,对各器官的干物质积累、养分吸收和分配规律进行比较。结果表明:2种鸢尾植株干物质积累均呈S形曲线,总积累量:白与黄>血石,这与2个品种的株型特点一致;白与黄和血石的干物质积累的旺盛期均在营养生长期,分别占生育期总干物质积累的52.38%和52.52%;2个品种各器官氮、磷钾养分积累差别比较大,但在同一品种中氮、磷、钾养分积累量均表现为钾>氮>磷;2品种对氮磷钾的积累利用情况差异明显,血石养分积累与利用主要在花期和营养生长期,白与黄养分积累与利用则主要在春花期与秋花期,因此建议2种鸢尾采用合理的氮磷钾施肥时间:血石应在现蕾期之前与花期之后,白与黄应在2个现蕾期之前。An experiment was conducted to study the difference of the dry matter accumulation, nutrient uptake and the distribution law of two kinds of the Iris germanica, ＇ bloodstone＇ and ＇ white and yellow＇. The results showed that the dry matter accumulation of two kinds of the Iris germanica appeares S-type curve, and ＇ white and yellow＇ 〉＇ bloodstone＇ in agreement of different plant type. The highest dry matter accumulation contents of ＇ white and yellow＇ and ＇ bloodstone＇ take up 52.38% and 52.52% of total nutrition in the vegetative period, respectively. There is significant difference between the nutrient accumulation in two species, but the nutrient accumulation shows as K〉N〉P in the same species. Two kinds of I. germanica have significant differences in accumulation and uptake. ＇ Bloodstone＇ accumulates nutrient mainly in the florescence and vegetative period. ＇ White and yellow＇ accumulates nutrient mainly in the spring flower period and autumn flower period. Therefore, we should determine the reasonable fertilization time. ＇ Bloodstone＇ should be fertilized before squaring period and after florescence, and ＇ white and yellow＇ should be fertilized before two squaring periods.

关 键 词：德国鸢尾 干物质积累 吸肥规律 

分 类 号：S688.9[农业科学—观赏园艺]