摘要
采用4个营养液配方进行层云Melocactus和金晃Notocactus的水培试验,以基质培为对照,研究仙人球在水培中的适应性以及生长情况.结果表明:供试的仙人球在水培中均能正常生长,且生长速度显著大于基质培或与之相当;层云在配方2这种有少量铵态氮的营养液中生长最好,而金晃在所有的配方中均生长得很好.表明层云是一种偏向于喜硝但又对铵态氮有少量需要的植物,而金晃则表现为喜硝为主,对高浓度铵态氮表现出生长抑制度现象.在有铵态氮的营养液配方中,无论是什么品种,其营养液pH值在种植过程中均逐渐降低,最低的可达2 9,但对仙人球的生长没有显著的影响,说明这2个品种的仙人球都较为耐酸性.
Two varieties of ball cactus (Melocactus and Notocactus) were grown in hydroponics with four nutrient solution formulae and in a peatmoss medium culture as control, respectively, to study the growth and the adaptability of ball cactuses in hydroponics. The results showed that both of the tested ball cactuses varieties could grow well in hydroponics, in which the growth rate was significantly higher than or equal to that in medium culture. Melocactus grew best in formula 2 with a little of NH^+_4-N, but Notocactus grew well in all of the tested formulae with or without NH^+_4-N, the higher content of NH^+_4-N in the nutrient solution might be harmful to the growth of Notocactus. The pH value of the nutrient solutions decreased after the NH^+_4-N was added. But the low pH value would not influence the growth of the ball cactuses. It implied the two varieties of ball cactuses were tolerant to low pH conditions.
出处
《华南农业大学学报》
CAS
CSCD
北大核心
2004年第2期13-16,共4页
Journal of South China Agricultural University
基金
广东省教育厅资助项目(Z02006)
