接种食细菌线虫对连作草莓幼苗生长及其根际土壤酶活性和矿质氮含量影响的研究

接种食细菌线虫对连作草莓幼苗生长及其根际土壤酶活性和矿质氮含量影响的研究

李贺勤^1,2, 张林林¹, 刘奇志¹, 张航¹, 白鹏华¹, 栾小兵¹

1. 中国农业大学农学与生物技术学院, 北京 100193;2. 青岛农业大学农学与植物保护学院/山东省旱作农业技术重点实验室, 青岛 266109

收稿日期:2013-08-18 修回日期:1900-01-01 出版日期:2014-06-08 发布日期:2014-06-08
通讯作者: 刘奇志，教授，E-mail：lqzzyx163@163.com。

Effects of Bacteria-feeding Nematodes on Growth of Strawberry Seedlings, Soil Enzyme Activities and Mineral Nitrogen Content in Continuous Cropping System

LI Heqin^1,2, ZHANG Linlin¹, LIU Qizhi¹, ZHANG Hang¹, BAI Penghua¹, LUAN Xiaobing¹

1. College of Agriculture and Biotechnology, China Agricultural University, Beijing 100193, China;2. Shandong Provincial Key Laboratory of Dryland Technology/College of Agronomy and Plant Protection, Qingdao Agricultural University, Qingdao 266109, China

Received:2013-08-18 Revised:1900-01-01 Online:2014-06-08 Published:2014-06-08

摘要/Abstract

摘要： 通过温室盆栽试验，探讨接种食细菌线虫对连作草莓幼苗生长、土壤酶活性和矿质氮含量的影响。试验设不接种食细菌线虫（CK）、接种食细菌线虫2条/克土（A）和接种食细菌线虫8条/克土（B）3个处理。结果表明，与对照相比食细菌线虫能够使连作草莓植株的株高、根长、地上部和地下部鲜重、根系活力和超氧化物歧化酶（SOD）活性显著增加13.35%～14.60%、14.17%～26.07%、25.61%～46.32%、31.20%～68.98%、9.09%～13.41%和6.12%～13.03%，使根系丙二醛（MDA）含量显著降低17.78%～22.8%；使连作草莓根际土壤脲酶、蔗糖酶活性和矿质氮含量显著增加9.14%～13.48%、9.06%～11.92%和6.95%～9.46%；接种量为2条/克土处理的影响作用大于接种量为8条/克土的处理。总之，接种食细菌线虫促进了连作草莓幼苗的生长，提高了其根际土壤酶活性和矿质氮含量。

Abstract: A pot experiment was conducted to study how soil bacteria-feeding nematodes impact strawberry seedling growth, soil enzyme activity and mineral nitrogen content in continuous cropping system. Treatments were designed as no inoculation (CK), inoculated with 2 individuals nematodes/g soil (A) and 8 individuals nematodes/g soil (B). The results showed that bacteria-feeding nematodes significantly increased the length and fresh weight of shoot or root, root activity and SOD activity of strawberry seedlings. The increment range was 13.35%—14.60%, 14.17%—26.07%, 25.61%—46.32%, 31.20%—68.98%, 9.09%—13.41% and 6.12%—13.03%, respectively. Bacteria-feeding nematodes significantly decreased MDA content, the decrement range was 17.78% to 22.8%. Bacteria-feeding nematodes significantly enhanced activities of urease, sucrase and the content of soil mineral nitrogen, the increment range was 9.14%—13.48%, 9.06%—11.92% and 6.95%—9.46%, respectively. In conclusion, inoculation of bacteria-feeding nematodes could stimulate strawberry seedling growth, increase soil enzyme activities and mineral nitrogen content in continuous cropping system.

中图分类号:

李贺勤1,2 , 张林林1 , 刘奇志1 , 张航1 , 白鹏华1 , 栾小兵1 . 接种食细菌线虫对连作草莓幼苗生长及其根际土壤酶活性和矿质氮含量影响的研究[J]. , DOI: .

LI Heqin^1,2, ZHANG Linlin¹, LIU Qizhi¹, ZHANG Hang¹, BAI Penghua¹, LUAN Xiaobing¹. Effects of Bacteria-feeding Nematodes on Growth of Strawberry Seedlings, Soil Enzyme Activities and Mineral Nitrogen Content in Continuous Cropping System[J]. , DOI: .