文献类型：期刊文献

英文题名：Soil microbial communities, soil nutrition, and seedling growth of a Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) plantation in response to three weed control methods

作者：Wang, Song[1] Sun, Honggang[1] Santos, Edson[2] Soares, Alvaro[2]

通信作者：Sun, HG[1]

机构：[1]Chinese Acad Forestry, Inst Subtrop Forestry, Hangzhou 311400, Peoples R China;[2]Univ Fed Uberlandia, Inst Agr Sci, Campus Monte Carmelo, BR-38500000 Uberlandia, MG, Brazil

年份：0

外文期刊名：PLANT AND SOIL

收录：;Scopus(收录号：2-s2.0-85134628195);WOS:【SCI-EXPANDED(收录号:WOS:000829655900001)】；

基金：This work was financially supported by the National Key Research and Development Program of China (grant no. 2021YFD2201303-03). We thank Xiangying Jiang and Wenliang Zhao for their help for our project. We thank Robert McKenzie, PhD, from Liwen Bianji (Edanz) (www.liwenbianji.cn/) for editing the English text of a draft of this manuscript.

语种：英文

外文关键词：Chinese fir; Weeding; Soil bacterial community; Soil properties; Leaves nutrition

摘要：Background and aims Competitive vegetation in forest stands influence seedling growth by changing soil nutrient availability. However, studies on the effects of different weed control methods on seedling growth of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) are rare. Methods We applied three weed control methods, comprising artificial sickle weeding (ASW), woody disc weeding (WDW), and nonwoven cloth weeding (nWCW), to explore their effect on growth of Chinese fir seedlings in a plantation in Jiangxi Province, China. Results The weed control methods affected the shoot height and root-collar diameter of the seedlings. The contents of sugar, glucose, triglycerides, total cholesterol, and free fatty acids in newly developed leaves were increased after ASW and nWCW treatment, and were consistent with the expression of genes associated with glucokinase, sucrose phosphate synthase, and sucrose synthase. Weeding method influenced soil properties, including pH, moisture, total nitrogen (TN), ammonium-N, nitrate-N, total phosphorus, available phosphorus, and dissolved organic carbon contents. Moisture content was the main factor that influenced the soil bacterial community and leaf nutrition. High-throughput sequencing of the bacterial 16 S rRNA gene revealed that the weeding methods affected bacterial community structure. Specifically, compared with ASW and nWCW, WDW contributed to lower soil bacterial diversity, simpler bacterial interaction, and increase in pathogenic bacteria potential. Conclusions The weeding methods differ in influence on soil bacterial community structure, soil properties, and plant growth, which are potentially useful to improve the growth of Chinese fir seedlings. ASW and nWCW strategies were recommended to be applied in the practice of weed control on seedling growth of Chinese fir.