农业工程学报Issue(1)：117-125,9.DOI:10.3969/j.issn.1002-6819.2013.01.016
生物有机肥对黄瓜幼苗生长、基质环境以及幼苗根系特征的影响
Effects of bioorganic fertilizer on cucumber seedling growth, substrate nutrient content and seedling root characteristics
摘要
Abstract
Taking cucumber as study object, the effects of bioorganic fertilizer on plant indices of cucumber seedlings, substrate nutrients and microbial population, and root-related characteristic parameters were investigated. Treatments include bioorganic fertilizer at four rates of dry weight (2%, 4%, 8% and 15%), and one untreated as control (no bioorganic fertilizer, CK). All parameters were finally analyzed by principal component analysis (PCA). The results showed that compared to CK on day 25 after sowing, the treatment of 8% was the optimal which significantly promoted plant growth, while the promotive effect of the treatment of 15% on plant growth became lower. The available P, K and ammonium N of the substrate increased with the increase of application dosage of bioorganic fertilizer. The urease activity increased under the treatment of 15% on day 10, 18 and 26 after sowing, and sucrase activity increased on days 10 and 25 after sowing. The bacterial and fungi population increased under treatment of 15 on day 18 and 25 after sowing. The values of fresh root weight, root dry weight, total root length, root volume, and root surface areas under the treatment of 8% were higher than those under other treatments. The highest PCA comprehensive scores under the treatment of 8% demonstrated the optimum treatment which can greatly promote cucumber seedlings growth and maintain substrate quality. The research can provide a reference for application of organic fertilizer national on cucumber seedlings.关键词
生物有机肥/基质/生长/黄瓜幼苗/微生物群落Key words
fertilizers/substrates/growth/cucumber seedlings/microbial population分类
农业科技引用本文复制引用
张雪艳,田蕾,高艳明,王佳,姚英,李建设..生物有机肥对黄瓜幼苗生长、基质环境以及幼苗根系特征的影响[J].农业工程学报,2013,(1):117-125,9.基金项目
宁夏自然科学基金(NZ1164),国家自然科学基金项目(31101580),宁夏农业综合开发土地治理科技推广项目(NTKJ-2012-03,NTKJ-2012-04) （NZ1164）
