摘要
以辣椒品种二荆条为试材,研究了外源化感物质香草酸对辣椒幼苗根际土壤酶活性及土壤养分含量的影响。结果表明:4种土壤酶活性均随着香草酸浓度增加而呈增大的趋势,其中影响最大的是多酚氧化酶,在香草酸浓度为1×10-7m o.lL-1时,其活性较对照显著增加了13.3%;土壤有机质、有效磷及速效钾含量均随着香草酸浓度的增加而呈降低的趋势,而土壤硝态氮含量却呈增加的趋势;4种土壤酶活性均与土壤有机质含量、有效磷含量及速效钾含量呈极显著负相关,而与土壤硝态氮含量呈显著或极显著正相关。
Effect of exogenous allelochemical vanillic acid pepper seedling was studied in this article. The results showed increased along with the increase of vanillic acid concentration. on soil enzyme activity and soil nutrient for that 4 kinds of soil enzyme activities were Furthermore, polyphenol oxidase activity increased by 13.3 % , compared to the control when vanillic acid concentration got 1×10-7m o.lL-1 The contents of soil organic matter, available P and available K tended to decrease with the increase of vanillic acid concentration. While the soil NO3- - N content tended to increase. Relations between the 4 soil enzyme activities and soil organic matter content, available P and available K were significantly negative. But their relation with soil NO3- - N contents was significantly positive or very significantly positive.
出处
《中国蔬菜》
北大核心
2009年第20期46-49,共4页
China Vegetables
基金
成都农业科技职业学院重点资助项目
