CAJ | 학술논문

采用遮阴网设计透光率分别为25%、50%、100%三种光照条件对桃叶杜鹃（Rhododendron annae）进行生理生化指标和光合指标研究，结果表明：50%透光率、25%透光率和100%3种条件下培养桃叶杜鹃幼苗90 d后，其苗高和地径的大小都为：透光率100%<透光率25%<透光率50%。桃叶杜鹃在50%光照条件下，叶绿素a、叶绿素 b 及总叶绿素含量最高，可溶性糖含量、可溶性蛋白的含量最低，各类酶活性也是最低；50%光照条件下桃叶杜鹃的光合速率极显著高于全光照和25%光照条件下的光合速率（p <0.01），比全光条件高29.58%，比25%光照条件高166.67%；气孔导度也显著高于全光照和25%光照下的气孔导度，比全光照高14.29%，比25%光照高33.33%。
채용차음망설계투광솔분별위25%、50%、100%삼충광조조건대도협두견（Rhododendron annae）진행생리생화지표화광합지표연구，결과표명：50%투광솔、25%투광솔화100%3충조건하배양도협두견유묘90 d후，기묘고화지경적대소도위：투광솔100%<투광솔25%<투광솔50%。도협두견재50%광조조건하，협록소a、협록소 b 급총협록소함량최고，가용성당함량、가용성단백적함량최저，각류매활성야시최저；50%광조조건하도협두견적광합속솔겁현저고우전광조화25%광조조건하적광합속솔（p <0.01），비전광조건고29.58%，비25%광조조건고166.67%；기공도도야현저고우전광조화25%광조하적기공도도，비전광조고14.29%，비25%광조고33.33%。
Determinations were conducted on physio-biochemical index ofRhododendron annae seedlings under three light treatments (25%, 50% and 100% of natural sunlight intensity). The result demonstrated that 90 days later, seedlings of three treatments had height and ground diameter ordered by 100% < 25% < 50%. Content of chlorophyll a, chlorophyll b and total chlorophyll of Rh. annae seedlings under 50% light condition was the highest, while soluble sugar content, soluble protein content and activity of various enzymes was the lowest. Photosynthetic rateof Rh. annae seedlings under 50% light condition was significantly higher than that under 100% and 25% light condition(p < 0.01), about 29.58% higher than that under 100%, and 166.67% higher than that under 25% light condition. Stomatal conductance of seedlings under different light conditions was similar to photosynthetic rate.