摘要
为了解新型外源有益微生物对连作菊花生长和土壤调控的促进效应,以切花菊主要生产品种‘优香’为材料,使用Super ER·MI菌剂做不同处理,研究其对连作菊花植株生长、养分利用以及土壤养分累积量的影响。结果表明：Super ER·MI菌剂能提高切花菊的植株鲜重与干重,对于株高、茎粗和叶片数影响不显著,能促进连作条件下切花菊植株氮磷钾的吸收,有效提升连作条件下切花菊品质,使切花菊的花序直径增大,提高优级花比例。Super ER·MI菌剂能促使植物吸收浅层土壤中的氮元素,减少浅层土壤中的氮素累积,改善土壤的理化环境,并能提高20-40cm土壤中养分含量,但仅能提高40-60cm土壤中的钾含量,对于氮和磷影响不显著。其中只使用菌剂处理而不添加基质的处理相对较好,切花菊地上部的干鲜重增加最显著,花序直径增粗最多,一级花的比重增加显著,氮磷钾元素的吸收量显著得到提升。
In order to explore the effects of exogenous beneficial microorganisms inoculation on chrysanthemum growth and soil conditions under continuous cropping. We inoculated chrysanthemum ＇Yuka＇ with Super ER · MI microorganism,and investigated the changes of the growth and nutrient absorption of plant and the soil nutrient. The results showed that inoculation with Super ER · MI microbial agent could promote the growth of chrysanthemum ‘Yuka’ , but has no significant effect on plant height , stem diameter and number of leaves, Super ER · MI microbial agent enhance the absorption of nutrients chrysanthemum ‘Yuka’ effectively, improve the ornamental quality of cut chrysanthemum,make inflorescence diameter increases,and increase the proportion o~ superior grade flowers. Super ER. MI microorganism could reduce nitrogen accumulation in the shallow soil and improve soil environment by promoting ‘Yuka＇ to absorb nitrogen in 0-20 cm soil layer. In addition,Super ER · MI microorganism could improve the nutrient content in 20-40 cm soil layer,but has no effect on nitrogen and phosphorus content except potassium in 40- 60 cm soil layer. Inoculating the Super ER · MI microorganism without additional substrate is better method, Aboveground fresh/dry weight of chrysanthemum and proportion of first-grade flowers increased significantly; the diameter of inflorescence enlarged ; And the uptake of N, P, K were improved distinctively.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
2016年第5期66-75,共10页
Journal of China Agricultural University
基金
北京市教委-科学研究与研究生培养共建项目(201502911110426)
关键词
菊花
连作
微生物
土壤
养分
chrysanthemum
continuous cropping
microorganism
soil
nutrients
