外源苯丙烯酸抑制连作黄瓜生长的机制初探
吕卫光;张春兰;彭宇;袁飞
【期刊名称】《中国蔬菜》 【年(卷),期】2001(000)003
【摘要】模拟黄瓜根系分泌物苯丙烯酸，外加于已连续种植5茬黄瓜的土壤中，种植黄瓜。结果表明，苯丙烯酸用量自50 mg*kg-1(土)处理开始，黄瓜生长、根系脱氢酶活性、ATPase活性，土壤微生物活性和养分吸收均受到明显抑制，且随用量的增加而抑制作用增强。苯丙烯酸的自毒作用是导致连作黄瓜生长受抑的障碍因子之一。%Cinnamic acid was applied in the fifth continuous cropping cucumber soil as root exudates．The results showed that cucumber growth，activity of root dehydrogenase，ATPase，soil microorganisms and nutrient uptake had been inhibited when cinnamic acid application was more than 50 mg*kg-1 soil．And the inhibition at a higher concentration was stronger than those at lower one．So the auto-toxic effect of cinnamic acid was one of the factors of continuous cropping barrier in cucumber growth． 【总页数】3页(10-12)
【关键词】苯丙烯酸;抑制;连作;黄瓜;生长 【作者】吕卫光;张春兰;彭宇;袁飞
【作者单位】上海市农业科学院环境科学研究所;南京农业大学资源环境学院;南京农业大学资源环境学院;南京农业大学资源环境学院 【正文语种】中文
外源苯丙烯酸抑制连作黄瓜生长的机制初探
