CAJ | 학술논문

为探讨粤北烟区烤烟适宜移栽期，采用田间试验方法，研究了不同移栽期对烤烟成熟期质体色素含量、碳氮代谢关键酶活性的变化。结果表明，提前移栽烟叶成熟前期质体色素含量、硝酸盐还原酶(NR)活性和淀粉酶活性提高，NR活性峰值出现的时间较晚，有利于延长烟叶的功能期，但过度提前移栽的烟叶成熟后期叶绿素含量和硝酸盐还原酶活性较高，碳氮代谢转化不协调，不利于烟叶的成熟落黄，烤后烟叶产量和产值均较低，推迟移栽有利于提高烤后烟叶产量，但酶活性和质体色素含量较低，导致烟叶早衰，降低烤后烟叶产值、中上等烟比例和均价。试验结果表明，粤北烟区的适宜移栽期为2月19日-2月24日。
위탐토월북연구고연괄의이재기，채용전간시험방법，연구료불동이재기대고연성숙기질체색소함량、탄담대사관건매활성적변화。결과표명，제전이재연협성숙전기질체색소함량、초산염환원매(NR)활성화정분매활성제고，NR활성봉치출현적시간교만，유리우연장연협적공능기，단과도제전이재적연협성숙후기협록소함량화초산염환원매활성교고，탄담대사전화불협조，불리우연협적성숙락황，고후연협산량화산치균교저，추지이재유리우제고고후연협산량，단매활성화질체색소함량교저，도치연협조쇠，강저고후연협산치、중상등연비례화균개。시험결과표명，월북연구적괄의이재기위2월19일-2월24일。
Chromoplast pigment content and activity of key enzymes in carbon and nitrogen metabolism were determined in order to study effects of transplanting period on quality offlue-cured tobacco at maturation stage. Results showed that yield and quality offlue-cured tobacco were significantly affected by transplanting period. Advance transplanting could increase chromoplast pigment content, nitrate reductasre (NR) and amylase activity at early maturing period. The later appearance of peak value of NR activity was beneficial to extend functional period. Tobacco leaves of excessive advance transplanting had higher chlorophyII content and NR activity at late ripening period, and the transformation of carbon and nitrogen metabolism was discordant, which against leaf yellowing and maturity. Yields and economic value were reduced by excessive advance transplanting. Delay of transplanting time would improve yield offlue-cured tobacco, while reduce enzyme activity and chromoplast pigment content, which led to premature senescence of tobacco. The proportion of mid to high grade tobacco leaves after curing was reduced, hence economic value and average price were reduced. Therefore, a suitable transplanting period offlue-cured tobacco planted in northern Guangdong province is from Feb. 19 to Feb. 24.