文献类型：期刊文献

英文题名：Deep banding of phosphorus and nitrogen enhances Rosa multiflora growth and nutrient accumulation by improving root spatial distribution

作者：Ma, Qinghua[1] Sun, Lifang[1] Tian, Hua[1] Rengel, Zed[2,3] Shen, Jianbo[4]

通信作者：Ma, QH[1]

机构：[1]Chinese Acad Forestry, Expt Ctr Forestry North China, 1 Shuizha West Rd, Beijing 102300, Peoples R China;[2]Univ Western Australia, UWA Sch Agr & Environm, Soil Sci & Plant Nutr, Perth, WA 6009, Australia;[3]Inst Adriat Crops & Karst Reclamat, Put Duilova 11, Split, Croatia;[4]China Agr Univ, Natl Acad Agr Green Dev, Minist Educ, Dept Plant Nutr,Coll Resources & Environm Sci,Key, Beijing 100193, Peoples R China

年份：2021

卷号：277

外文期刊名：SCIENTIA HORTICULTURAE

收录：;Scopus(收录号：2-s2.0-85093112301);WOS:【SCI-EXPANDED(收录号:WOS:000652022900001)】；

基金：This study was supported by the Science Foundation of the Chinese Academy of Forestry (CAFYBB2017MA017) and the Natural Science Foundation of China (31700559).

语种：英文

外文关键词：Deep banding; Nitrogen; Phosphate; Root spatial distribution; Nutrient uptake; Rosa multiflora

摘要：Plant roots show morphological plasticity to adapt to heterogeneous nitrogen (N) and phosphorus (P) distribution, but how fertilizer placement affects root growth and nutrient uptake of perennial non-herbaceous species (including Rosa multiflora Thunb. ex Murr. that was the subject of this study) is not understood. A pot experiment was conducted with five N and five P fertilization rates to determine the appropriate application rates. Then, a soil column trial (using the selected N and P rates) was conducted with four placements, including N and P applied alone or in combination to either 0-15 cm or 15-30 cm soil layer, and NP mixed throughout the soil as the control. The results showed that the application rates of 80 mg N kg(-1) and 80 mg P kg(-1) soil were appropriate for root growth and trunk expansion of Rosa multiflora. Deep banding of NP in the 15-30 cm soil layer increased the first-order lateral root length and density in the fertilized zone as well as P accumulation compared with the NP mixed and the other placement treatments after 46 days. After 108 days, compared with the NP mixed treatment, total plant N and P accumulation significantly increased in the deep NP banding treatment, with decreased rhizo-sphere pH and improved root growth in the deep fertilized zone; however, similar or significantly decreased plant N and P accumulation was observed in the other three placement treatments. These findings indicated that deep banding of NP in the 15-30 cm soil layer significantly stimulated root proliferation and improved root spatial distribution, which can be an effective management strategy for optimizing Rosa multiflora growth and nutrient uptake.