华南农业大学学报
華南農業大學學報
화남농업대학학보
JOURNAL OF SOUTH CHINA AGRICULTURAL UNIVERSITY
2013年
4期
458-464
,共7页
刘朝科%王军%谢玉华%陈永明%顾学文%王佩%丁效东
劉朝科%王軍%謝玉華%陳永明%顧學文%王珮%丁效東
류조과%왕군%사옥화%진영명%고학문%왕패%정효동
烟草%种植密度%施氮量%叶绿素%光合特性%代谢酶活性
煙草%種植密度%施氮量%葉綠素%光閤特性%代謝酶活性
연초%충식밀도%시담량%협록소%광합특성%대사매활성
Nicotiana tobacum%planting density%N application,chlorophyll%photosynthetic characteris-tic%metabolic enzyme activity
采用田间裂区试验,研究3种种植密度(主处理)与3个氮水平(副处理)对烤烟产量、光合特性及代谢酶活性的影响.结果表明:1)种植密度与施氮量对地上部生长具有正交互作用.2)种植密度、施氮量、种植密度×施氮量对叶绿素a、叶绿素b和类胡萝卜素含量无显著影响.高密度与中密度处理叶片光合速率之间无显著差异,两者均显著高于低密度处理;高密度时光合速率在高氮时高于中、低氮处理;中密度时光合速率在中氮时与低、高氮时均无显著差异,高氮时显著高于中氮时;低密度时光合速率在高氮时低于低氮时,中氮处理与低、高氮处理均无显著性差异.3)种植密度与施氮量互作对旺长期和成熟期叶片硝酸还原酶活性、淀粉酶活性具有调控作用.
採用田間裂區試驗,研究3種種植密度(主處理)與3箇氮水平(副處理)對烤煙產量、光閤特性及代謝酶活性的影響.結果錶明:1)種植密度與施氮量對地上部生長具有正交互作用.2)種植密度、施氮量、種植密度×施氮量對葉綠素a、葉綠素b和類鬍蘿蔔素含量無顯著影響.高密度與中密度處理葉片光閤速率之間無顯著差異,兩者均顯著高于低密度處理;高密度時光閤速率在高氮時高于中、低氮處理;中密度時光閤速率在中氮時與低、高氮時均無顯著差異,高氮時顯著高于中氮時;低密度時光閤速率在高氮時低于低氮時,中氮處理與低、高氮處理均無顯著性差異.3)種植密度與施氮量互作對旺長期和成熟期葉片硝痠還原酶活性、澱粉酶活性具有調控作用.
채용전간렬구시험,연구3충충식밀도(주처리)여3개담수평(부처리)대고연산량、광합특성급대사매활성적영향.결과표명:1)충식밀도여시담량대지상부생장구유정교호작용.2)충식밀도、시담량、충식밀도×시담량대협록소a、협록소b화류호라복소함량무현저영향.고밀도여중밀도처리협편광합속솔지간무현저차이,량자균현저고우저밀도처리;고밀도시광합속솔재고담시고우중、저담처리;중밀도시광합속솔재중담시여저、고담시균무현저차이,고담시현저고우중담시;저밀도시광합속솔재고담시저우저담시,중담처리여저、고담처리균무현저성차이.3)충식밀도여시담량호작대왕장기화성숙기협편초산환원매활성、정분매활성구유조공작용.
A field experiment was carried out to investigate the effects of planting density and N applica-tion on the yield , photosynthetic characteristics and enzyme activities of tobacco .The results showed that:1) Planting density and N had a positive interaction with shoot biomass;2) Planting density, N and planting density ×N had no effects on chlorophyll a ,chlorophyll b and carotenoids content .Photosynthetic rate had no difference between high and medium density , which was higher than that of low density . Under the condition of high density , the photosynthetic rate of high N was higher than that of medium and low N treatment .Under the condition of medium density , photosynthetic rate at medium N had no differ-ence compared with that at either low or high N .Photosynthetic rate at high N was higher than that at me-dium N, and photosynthetic rate at low N had no difference with that at medium or high N .Under the con-dition of low density , photosynthetic rate at high N was lower than that at low N , but photosynthetic rate at medium N had no difference compared with that at either low or high N;3) Planting density and N had a significant impact on nitrate reductase activities and amylase activities at growing and maturing stages .