CAJ | 학술논문

用遮阳网设置不同透光率(自然全光照的1％、3％、8％、12％和22％)处理，对不同光照条件下三七〔Panax notoginseng ( Burk.) F. H. Chen〕幼苗形态指标(株高、冠幅、块根长、主根长、块根直径、茎基径、单株须根数和单株须根长)、干物质积累(不同器官干质量)和分配以及叶片性状(单株叶面积、比叶面积和叶绿素相对含量SPAD值)的变化进行了研究。结果表明：在透光率不同的条件下三七幼苗的形态指标、不同器官干质量及分配以及叶片性状均有明显变化。其中，块根直径、单株须根长、单株须根数、不同器官(块根、须根、根、叶片和茎)干质量和植株总干质量均随透光率增大逐渐提高；株高在透光率22％条件下最高；冠幅和单株叶面积在透光率3％条件下最大；主根长、茎基径、根冠比、根质比及SPAD值均在透光率8％条件下最高；茎质比和叶质比在透光率3％和1％条件下较大；比叶面积随透光率增大逐渐降低。综合分析结果揭示：三七是一种典型的喜阴植物，种植过程中适当遮阳有利于其生长和干物质积累，其中透光率8％对三七幼苗生长较为适宜。
용차양망설치불동투광솔(자연전광조적1％、3％、8％、12％화22％)처리，대불동광조조건하삼칠〔Panax notoginseng ( Burk.) F. H. Chen〕유묘형태지표(주고、관폭、괴근장、주근장、괴근직경、경기경、단주수근수화단주수근장)、간물질적루(불동기관간질량)화분배이급협편성상(단주협면적、비협면적화협록소상대함량SPAD치)적변화진행료연구。결과표명：재투광솔불동적조건하삼칠유묘적형태지표、불동기관간질량급분배이급협편성상균유명현변화。기중，괴근직경、단주수근장、단주수근수、불동기관(괴근、수근、근、협편화경)간질량화식주총간질량균수투광솔증대축점제고；주고재투광솔22％조건하최고；관폭화단주협면적재투광솔3％조건하최대；주근장、경기경、근관비、근질비급SPAD치균재투광솔8％조건하최고；경질비화협질비재투광솔3％화1％조건하교대；비협면적수투광솔증대축점강저。종합분석결과게시：삼칠시일충전형적희음식물，충식과정중괄당차양유리우기생장화간물질적루，기중투광솔8％대삼칠유묘생장교위괄의。
Different transmittance (1%, 3%, 8%, 12% and 22 % of full sunlight) treatments were set up by shading net, and on the basis, changes in morphological indexes ( plant height, crown width, root tuber length, main root length, root tuber diameter, stem base diameter, number and length of fibrous root per plant ) , dry matter accumulation ( dry weights of different organs ) and allocation, and leaf characters ( leaf area per plant, specific leaf area and SPAD value of relative chlorophyll content) of Panax notoginseng ( Burk.) F. H. Chen seedling were studied under different light conditions. Results show that there are obvious changes in morphological indexes, dry matter accumulation and allocation of different organs, and leaf characters under different transmittances. In which, root tuber diameter, length and number of fibrous root per plant, dry weight of different organs ( including root tuber, fibrous root, root, leaf and stem ) and total dry weight of individual all increase gradually with enhancing of transmittance;plant height is the highest under 22% of transmittance; crown width and leaf area per plant are the biggest under 3% of transmittance;main root length, stem base diameter, root-shoot ratio, root mass ratio and SPAD value are the highest under 8% of transmittance; both of stem mass ratio and leaf mass ratio are higher under 3% and 1% of transmittances; and specific leaf area reduces gradually with enhancing of transmittances. Result of comprehensive analysis suggests that P. notoginseng is a typical shade-tolerance species, and appropriate shading is beneficial to its growth and dry matter accumulation, in which, 8% of transmittance is suitable for its seedling growth.