CAJ | 학술논문

田间条件下研究了桔梗的干物质积累与植株氮、磷、钾积累的特点及其相互关系.结果表明,桔梗干物质积累总量随氮、磷、钾积累总量的增加呈直线增加趋势,相关系数均达显著水平.桔梗茎、叶、花、果实干物质积累在整个生育期内呈上升趋势;桔梗根部干物质积累在不同阶段出现不同的积累趋势.在幼苗期和开花期,根都干物质积累为负值,分别以-11.16、-28.33 mg/(plant·d)的速率将营养物质转移供地上部分生长发育;在生长旺盛期和结果期,根部干物质积累速率加快,分别为44.01、38.33 mg/(plant·d),干重增加.不同时期桔梗对氮、磷、钾的吸收量不同.在移栽后45 d内对氮、磷、钾的吸收较少,仅占全部吸收量的7.21%、3.99%、5.53%;移栽后45～90 d吸收量迅速增加,氮、磷、钾的吸收量占全部吸收量的64.78%、56.57%、76.25%;移栽120 d之后又有所下降.总的来说,植株对氮的吸收量多,钾次之,磷最少,全生育期内对氮、磷、钾的吸收比例为1:0.28:0.48.
전간조건하연구료길경적간물질적루여식주담、린、갑적루적특점급기상호관계.결과표명,길경간물질적루총량수담、린、갑적루총량적증가정직선증가추세,상관계수균체현저수평.길경경、협、화、과실간물질적루재정개생육기내정상승추세;길경근부간물질적루재불동계단출현불동적적루추세.재유묘기화개화기,근도간물질적루위부치,분별이-11.16、-28.33 mg/(plant·d)적속솔장영양물질전이공지상부분생장발육;재생장왕성기화결과기,근부간물질적루속솔가쾌,분별위44.01、38.33 mg/(plant·d),간중증가.불동시기길경대담、린、갑적흡수량불동.재이재후45 d내대담、린、갑적흡수교소,부점전부흡수량적7.21%、3.99%、5.53%;이재후45～90 d흡수량신속증가,담、린、갑적흡수량점전부흡수량적64.78%、56.57%、76.25%;이재120 d지후우유소하강.총적래설,식주대담적흡수량다,갑차지,린최소,전생육기내대담、린、갑적흡수비례위1:0.28:0.48.
Plantycodon grandiflorum is a Chinese traditional medicine and health food recorded by many ancient codices. It has beneficial effect on lung, heart, and respiration system. The planting area of Plantycodon grandiflorum has been gradually increasing in China in the last few years. A field experiment was conducted to study the accumulation characteristics of dry matter, nitrogen, phosphorus and potassium of Plantycodon grandiflorum and their relationship. The results showed that, the accumulated dry matter increase linearly with correlation coefficient being significant. Dry matter accumulation in stem, leaf, flower and fruit in pgrandiflorum increased throughout the whole growing period, while dry matter accumulation in root showed an inconstant tendency at different stages. At the seedling and flower stage, it was negative being -11.16 and -28.33 mg/(plant·d), respectively resulting form the nutrients translating to aerial parts for the plant growth and development. At vigorous growth and fruiting stage, the rate of dry matter accumulation in root was picking up, being 44.01 and 38.33 mg/(plant·d), respectively. The nitrogen, phosphorus and potassium absorption capacity varied between different developing stages. The absorption capacity of N, P and K was comparatively lower within first 45 days after transplantation, which only accounted for 7.21%, 3.99%, and 5.53% of the total capacity, respectively. But it increased rapidly till 90 day after transplantation, which accounted for 64.78 %, 56.57%, and 76.25% respectively, then it decreased. In general, the absorption capacity of N was the highest,followed by K and P.The N:P:K ratio was 1:0.28:0.48 taking the whole growing stages inconsideration.